Quick filters:
Page 29 of 39
F formed Stock Photos and Images
RMRM5JN0–. Annual report of the Board of Regents of the Smithsonian Institution. Smithsonian Institution; Smithsonian Institution. Archives; Discoveries in science. f Fi^. M suspended vertically in the alcoholic mixture by the iron wire a, and the two liquid lenses being formed, their two centres Were at the same height, and ten centimetres distant from each other. In this arrangement the telescope cannot be adjusted by altering the distance between the objective and the eye-piece; but this end is attained by varying the curvatures of these tAvo lenses. With the aid of a few preliminary experiments, I
RMRN75XW–. The anatomy of the domestic animals. Veterinary anatomy. 330 FASCIA AND MUSCLES OF THE HORSE nishes insertion to fibers of the vasti. The tendon of insertion is formed by the union of these tendinous layers on the lower part of the muscle. The lower portion of the muscle is pennate, the fibers on either side converging on the tendon at an acute angle. Relations.—Medially, the iliacus, sartorius, and vastus medialis; laterally, the tensor fasciae latae, glutei, and vastus lateralis; posteriorly, the hip joint and the vastus intermedius; anteriorly, the fascia lata and the skin. The anterior f
RMRH1JBH–. The British rust fungi (Uredinales), their biology and classification. Uredineae. TELEUTOSPORES 35 The teleutospores are generally produced in sori like those of the uredospores ; they frequently arise on the same mycelium, and very often on the same spore-bed, mingled with the uredo- spores. If both are found in any species, the teleutospores are always formed at least not earlier, and usually later than the uredospores. Their primary function now is to tide over an unfavourable period; for this reason they are sometimes called, in England, winter-SY>ores. They may be one-celled as in. F
![. A text-book of comparative physiology [microform] : for students and practitioners of comparative (veterinary) medicine. Physiology, Comparative; Veterinary physiology; Physiologie comparée; Physiologie vétérinaire. that formed the % reunion of the ilaginouB pillai*, r a new segmen- way between the itdons. lus seen that a ler of structures ar or are clearly uring the first icubation : the itreak, primitive ledullary plates ), the neural ca- head-fold, the f the mesoblast, tvertebree. with he amnion and the second day the remaining structures of the larked out, while arose during the liave pr Stock Photo](https://c8.alamy.com/comp/REW0WX/a-text-book-of-comparative-physiology-microform-for-students-and-practitioners-of-comparative-veterinary-medicine-physiology-comparative-veterinary-physiology-physiologie-compare-physiologie-vtrinaire-that-formed-the-reunion-of-the-ilaginoub-pillai-r-a-new-segmen-way-between-the-itdons-lus-seen-that-a-ler-of-structures-ar-or-are-clearly-uring-the-first-icubation-the-itreak-primitive-ledullary-plates-the-neural-ca-head-fold-the-f-the-mesoblast-tvertebree-with-he-amnion-and-the-second-day-the-remaining-structures-of-the-larked-out-while-arose-during-the-liave-pr-REW0WX.jpg ". A text-book of comparative physiology [microform] : for students and practitioners of comparative (veterinary) medicine. Physiology, Comparative; Veterinary physiology; Physiologie comparée; Physiologie vétérinaire. that formed the % reunion of the ilaginouB pillai*, r a new segmen- way between the itdons. lus seen that a ler of structures ar or are clearly uring the first icubation : the itreak, primitive ledullary plates ), the neural ca- head-fold, the f the mesoblast, tvertebree. with he amnion and the second day the remaining structures of the larked out, while arose during the liave pr Stock Photo")
RMREW0WX–. A text-book of comparative physiology [microform] : for students and practitioners of comparative (veterinary) medicine. Physiology, Comparative; Veterinary physiology; Physiologie comparée; Physiologie vétérinaire. that formed the % reunion of the ilaginouB pillai*, r a new segmen- way between the itdons. lus seen that a ler of structures ar or are clearly uring the first icubation : the itreak, primitive ledullary plates ), the neural ca- head-fold, the f the mesoblast, tvertebree. with he amnion and the second day the remaining structures of the larked out, while arose during the liave pr
RMRN50FX–. The animal kingdom : arranged after its organization; forming a natural history of animals, and an introduction to comparative anatomy. Zoology. USSfc ^Wi;f- Fig. 16.—Head of Nyclcris javanicua These animals are remarkable for a jjower of inflatin;^ the skin, which is only attached to the body in some few places, by an open cel- lular connexion. There is a small aperture at the bottom of each cheek-pouch, by which this is eflected; and the nostrils are so formed as to close when at rest, and to open only at will. By respiring with the mouth closed, the air passes through these apertures alon
RMRHP07C–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. DIFFERENTIAL NUTRIENT REQUIRKM F.XTS 127 time of explanation, whereas the central nervous system continues its development and shows little if any harmful effect of the fluoride. At lower fluoride concentra- tions (2.5 X 103 and Q3M) there is progressively less effect upon heart-formation. The typical picture of the differential effect is that of an apparently normal embryo with a mass of dispersed and degenerating mesodermal cells occupying the position in which the heart would have formed. The degenerative effect of flu
RMRPX11R–. The comparative anatomy of the domesticated animals. Veterinary anatomy. 310 TEE MUSCLES, composed of the gastrocnemii, of which we will say nothing, and the 6ohus. The latter is flattened from before to behind, attached to the upper third of the fibula, the oblique line of the tibia, and the middle third of the inner border of this bone, and terminated by an aponeurotic lamina which is blended with the tendo-Achilles. The plantar is is formed by a small fusiform muscular body, situated beneath the external gemellus, then Fig. 139. Fig. 140.. f}y MUSCLES OP THE HUMAN LEG; ANTERIOR TIBIAL REG
![. The comparative anatomy of the domesticated animals. Horses; Veterinary anatomy. TBE FCETUS. 1023 allantoid cavity, it becomes detached, like certain fibrous or cartilaginous bodies in the synovial or serous cavities ? " (F. Lecoq). According to Dastre, the hippoiuanes arise between the chorion and the allantois, and they are formed by the phospliatic matter of the chorion, wliich collects in masses at certain points, where it is enveloped by a mass of the sub- jacent mucous connective substance of this membrane. 4. The Umbilical Vesicle. The iimhilical vesicle is a small fusiform or py Stock Photo](https://c8.alamy.com/comp/REE4AH/the-comparative-anatomy-of-the-domesticated-animals-horses-veterinary-anatomy-tbe-fcetus-1023-allantoid-cavity-it-becomes-detached-like-certain-fibrous-or-cartilaginous-bodies-in-the-synovial-or-serous-cavities-quot-f-lecoq-according-to-dastre-the-hippoiuanes-arise-between-the-chorion-and-the-allantois-and-they-are-formed-by-the-phospliatic-matter-of-the-chorion-wliich-collects-in-masses-at-certain-points-where-it-is-enveloped-by-a-mass-of-the-sub-jacent-mucous-connective-substance-of-this-membrane-4-the-umbilical-vesicle-the-iimhilical-vesicle-is-a-small-fusiform-or-py-REE4AH.jpg ". The comparative anatomy of the domesticated animals. Horses; Veterinary anatomy. TBE FCETUS. 1023 allantoid cavity, it becomes detached, like certain fibrous or cartilaginous bodies in the synovial or serous cavities ? " (F. Lecoq). According to Dastre, the hippoiuanes arise between the chorion and the allantois, and they are formed by the phospliatic matter of the chorion, wliich collects in masses at certain points, where it is enveloped by a mass of the sub- jacent mucous connective substance of this membrane. 4. The Umbilical Vesicle. The iimhilical vesicle is a small fusiform or py Stock Photo")
RMREE4AH–. The comparative anatomy of the domesticated animals. Horses; Veterinary anatomy. TBE FCETUS. 1023 allantoid cavity, it becomes detached, like certain fibrous or cartilaginous bodies in the synovial or serous cavities ? " (F. Lecoq). According to Dastre, the hippoiuanes arise between the chorion and the allantois, and they are formed by the phospliatic matter of the chorion, wliich collects in masses at certain points, where it is enveloped by a mass of the sub- jacent mucous connective substance of this membrane. 4. The Umbilical Vesicle. The iimhilical vesicle is a small fusiform or py
RMRDXX01–. Our domestic animals, their habits, intelligence and usefulness; tr. from the French of Gos. De Voogt, by Katharine P. Wormeley;. Domestic animals. OUK FltriiND THE Sl'/RRinV The canaries of the different countries — French, German, and English — can be dis- Of course much more work is to be done tinguished by their shape and song. The in the great establishments where the breeding French breed is noted for its slender f(.)rm; the and raising of canaries is made a business. So German species, formed chiefly of the Hartz many things must be thought of and attended birds, is the musical breed
RMRDFC9N–. The structure and development of mosses and ferns (Archegoniatae). Plant morphology; Mosses; Ferns. --'Z- â F. older parts of the root to the segments of the apical cell is impossible to determine, and evidently is not always exactly the same. The root-cap is derived mainly from the outer segments of the apical cell, but also to some extent from the outer cells of the lateral segments; and the central cylinder, where the base of the apical cell is truncate, is -^ St A- formed mainly from the basal segments, but in part as well from the inner cells of the lateral segments. The vascular cylin
RMRE4G5R–. The comparative anatomy of the domesticated animals. Veterinary anatomy. 898 miBBYOLOGy. presence of the hippomanes in the allantoid sac. Nothing in its appearance indicates that it may be formed at the expense of the liquid contained in this membrane. Sometimes pediculated hippomanes are found, and these may- assist in explaining the formation of the free hippomanes. Bourgelat speaks in his ' Anatomie' of pediculated hippomanes, and I have been able to make the following observations, through having met with a large number on a fa3tus: Fig;. 425.. J- / - f. Please note that these images are
RMRR28MA–. Adventures in radioisotope research;. Radioactive tracers; Radiobiology. RADIOACTIVE IXDICATORS IN BIOCHEMISTRY 985 inorganic P the specific activity of which corresponds to the mean value of the inorganic P during that time intervaL This mean value, which can be experimentally determined, is denoted by f{^). The contribution of active deoxyribonucleic acid of red corpuscles formed during the first day of the experiment to the total activity of erythrocyte deoxyribo- nucleic acid measured after the lapse of 1 day is f{^) {0 ^), where 0 is a function of the time taken by the transition of the
![. The microscope; an introduction to microscopic methods and to histology. Microscopes; 1899. CH. /.] MICROSCOPE AND ACCESSORIES. 11 Axis. The principal optic axis of the microscope and of the eye. Cr. Cornea of the eye. L. Crystalline lens of the eye. R. Single, ideal, re- fracting surface at which all the refractions of the eye may be assumed to take place. F.F. The principal focus of the positive ocular and of the objective. Mirror. The mirror reflecting parallel rays to the object. The light is central. See Ch. II. Pos. Ocular. An ocular in which the real image is formed outside the ocular Stock Photo](https://c8.alamy.com/comp/RE05JP/the-microscope-an-introduction-to-microscopic-methods-and-to-histology-microscopes-1899-ch-microscope-and-accessories-11-axis-the-principal-optic-axis-of-the-microscope-and-of-the-eye-cr-cornea-of-the-eye-l-crystalline-lens-of-the-eye-r-single-ideal-re-fracting-surface-at-which-all-the-refractions-of-the-eye-may-be-assumed-to-take-place-ff-the-principal-focus-of-the-positive-ocular-and-of-the-objective-mirror-the-mirror-reflecting-parallel-rays-to-the-object-the-light-is-central-see-ch-ii-pos-ocular-an-ocular-in-which-the-real-image-is-formed-outside-the-ocular-RE05JP.jpg ". The microscope; an introduction to microscopic methods and to histology. Microscopes; 1899. CH. /.] MICROSCOPE AND ACCESSORIES. 11 Axis. The principal optic axis of the microscope and of the eye. Cr. Cornea of the eye. L. Crystalline lens of the eye. R. Single, ideal, re- fracting surface at which all the refractions of the eye may be assumed to take place. F.F. The principal focus of the positive ocular and of the objective. Mirror. The mirror reflecting parallel rays to the object. The light is central. See Ch. II. Pos. Ocular. An ocular in which the real image is formed outside the ocular Stock Photo")
RMRE05JP–. The microscope; an introduction to microscopic methods and to histology. Microscopes; 1899. CH. /.] MICROSCOPE AND ACCESSORIES. 11 Axis. The principal optic axis of the microscope and of the eye. Cr. Cornea of the eye. L. Crystalline lens of the eye. R. Single, ideal, re- fracting surface at which all the refractions of the eye may be assumed to take place. F.F. The principal focus of the positive ocular and of the objective. Mirror. The mirror reflecting parallel rays to the object. The light is central. See Ch. II. Pos. Ocular. An ocular in which the real image is formed outside the ocular
RMRDYAHG–. The anatomy of the domestic animals . Veterinary anatomy. 208 THE ARTICULATIONS (5) Gomphosis.—This term is sometimes applied to the implantation of the teeth in the alveoli. The gomphosis is not, properly considered, a joint at all, since the teeth are not parts of the skeleton. DIARTHROSES These joints are characterized by the presence of a joint cavity and by their mobility. Thej' are often called movable or true joints. A simple joint (Articu- latio simplex) is one formed by two articular surfaces; a composite joint (Articulatio composita), one formed by several articular surfaces. The f
RMRDT0KN–. Text book of vertebrate zoology. Vertebrates; Anatomy, Comparative. 152 MORPHOLOGY OF THE ORGANS OF VERTEBRATES. extend forward from the anterior end of the parachordals (or of the notochord) on either side of the pituitary body. In front, at about the anterior end of the brain, these trabeculae turn inwards towards each other and fuse into a median mass which, from its future history, is known as the ethmoid plate. Farther forward the trabeculae separate, and turn outward in front of the developing olfactory organs, the diverging horns thus formed being known as the cornua trabeculae. The f
RMRDFB3J–. The Victoria history of the county of Hertford. Natural history. A HISTORY OF HERTFORDSHIRE to the dean was, however, shortly afterwards annulled.81 In the intrigues of Stephen's reign the castle played a part of some importance, and it i) probable that the masonry keep had been built by this time. From its position on the main road from London to Saffron Walden it cut the communication between those places for Geoffrey de Mandevitle Ear! of Essex. The possession of the castle was therefore an import- ant object to the earl and formed part of the price demanded by him from the Empress Maud f
![. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology; Zoology. Fig. 522. — Aphrocallistes Bocagei. f. which has been dredged by the " Blake " in depths of from 164 to 400 fathoms. It is also found in the eastern basin of the North Atlantic. The network appears to be formed by the co- alescence of stellate spicules. These sponges are often attached to corals and soldered together, so as to form large convo- luted masses. Dactylocalyx is one of the most characteristic of the Caribbean types. The shape of Dactylocalyx pumi- ceus (Fig. 523) varies from that of a cu Stock Photo](https://c8.alamy.com/comp/RGFT59/bulletin-of-the-museum-of-comparative-zoology-at-harvard-college-zoology-zoology-fig-522-aphrocallistes-bocagei-f-which-has-been-dredged-by-the-quot-blake-quot-in-depths-of-from-164-to-400-fathoms-it-is-also-found-in-the-eastern-basin-of-the-north-atlantic-the-network-appears-to-be-formed-by-the-co-alescence-of-stellate-spicules-these-sponges-are-often-attached-to-corals-and-soldered-together-so-as-to-form-large-convo-luted-masses-dactylocalyx-is-one-of-the-most-characteristic-of-the-caribbean-types-the-shape-of-dactylocalyx-pumi-ceus-fig-523-varies-from-that-of-a-cu-RGFT59.jpg ". Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology; Zoology. Fig. 522. — Aphrocallistes Bocagei. f. which has been dredged by the " Blake " in depths of from 164 to 400 fathoms. It is also found in the eastern basin of the North Atlantic. The network appears to be formed by the co- alescence of stellate spicules. These sponges are often attached to corals and soldered together, so as to form large convo- luted masses. Dactylocalyx is one of the most characteristic of the Caribbean types. The shape of Dactylocalyx pumi- ceus (Fig. 523) varies from that of a cu Stock Photo")
RMRGFT59–. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology; Zoology. Fig. 522. — Aphrocallistes Bocagei. f. which has been dredged by the " Blake " in depths of from 164 to 400 fathoms. It is also found in the eastern basin of the North Atlantic. The network appears to be formed by the co- alescence of stellate spicules. These sponges are often attached to corals and soldered together, so as to form large convo- luted masses. Dactylocalyx is one of the most characteristic of the Caribbean types. The shape of Dactylocalyx pumi- ceus (Fig. 523) varies from that of a cu
![. My garden, its plan and culture together with a general description of its geology, botany, and natural history. Gardening. F.G. zio..-Lampern. F.c;. tT03.-Struc.ure of Cartilage in the Lampem. times another spot. Their motions are very graceful, and if they swim away for a short distance they return to the same hollow depression. When in the act of making this depression, their agility, and the power which they exhibit, are prodigious. They seize hold of a stone with "their mouth, which is formed like a sucker, and then by a violent wriggling of the tail contrive to remove it. They may Stock Photo](https://c8.alamy.com/comp/RDT4P0/my-garden-its-plan-and-culture-together-with-a-general-description-of-its-geology-botany-and-natural-history-gardening-fg-zio-lampern-fc-tt03-strucure-of-cartilage-in-the-lampem-times-another-spot-their-motions-are-very-graceful-and-if-they-swim-away-for-a-short-distance-they-return-to-the-same-hollow-depression-when-in-the-act-of-making-this-depression-their-agility-and-the-power-which-they-exhibit-are-prodigious-they-seize-hold-of-a-stone-with-quottheir-mouth-which-is-formed-like-a-sucker-and-then-by-a-violent-wriggling-of-the-tail-contrive-to-remove-it-they-may-RDT4P0.jpg ". My garden, its plan and culture together with a general description of its geology, botany, and natural history. Gardening. F.G. zio..-Lampern. F.c;. tT03.-Struc.ure of Cartilage in the Lampem. times another spot. Their motions are very graceful, and if they swim away for a short distance they return to the same hollow depression. When in the act of making this depression, their agility, and the power which they exhibit, are prodigious. They seize hold of a stone with "their mouth, which is formed like a sucker, and then by a violent wriggling of the tail contrive to remove it. They may Stock Photo")
RMRDT4P0–. My garden, its plan and culture together with a general description of its geology, botany, and natural history. Gardening. F.G. zio..-Lampern. F.c;. tT03.-Struc.ure of Cartilage in the Lampem. times another spot. Their motions are very graceful, and if they swim away for a short distance they return to the same hollow depression. When in the act of making this depression, their agility, and the power which they exhibit, are prodigious. They seize hold of a stone with "their mouth, which is formed like a sucker, and then by a violent wriggling of the tail contrive to remove it. They may
![. The first principles of agriculture [microform]. Agriculture; Agriculture. THE WEEDS OF THE FARM. 103 (2) If the infested field be in meadow, and the rag-weed plants be numerous, give the field two mowings, both, however, before the time for the ripening of the seed; and let the mowings be made close to the surface. This precaution *s necessary, since, the seeds of the ra^f-weed being formed low down on its stem, were the mowing not close to the surfnce, they might be left undisturbed. If the plants are not numerous, the second mowing may be dispensed with, and the plants be removed by hand. Stock Photo](https://c8.alamy.com/comp/RJ22AG/the-first-principles-of-agriculture-microform-agriculture-agriculture-the-weeds-of-the-farm-103-2-if-the-infested-field-be-in-meadow-and-the-rag-weed-plants-be-numerous-give-the-field-two-mowings-both-however-before-the-time-for-the-ripening-of-the-seed-and-let-the-mowings-be-made-close-to-the-surface-this-precaution-s-necessary-since-the-seeds-of-the-raf-weed-being-formed-low-down-on-its-stem-were-the-mowing-not-close-to-the-surfnce-they-might-be-left-undisturbed-if-the-plants-are-not-numerous-the-second-mowing-may-be-dispensed-with-and-the-plants-be-removed-by-hand-RJ22AG.jpg ". The first principles of agriculture [microform]. Agriculture; Agriculture. THE WEEDS OF THE FARM. 103 (2) If the infested field be in meadow, and the rag-weed plants be numerous, give the field two mowings, both, however, before the time for the ripening of the seed; and let the mowings be made close to the surface. This precaution *s necessary, since, the seeds of the ra^f-weed being formed low down on its stem, were the mowing not close to the surfnce, they might be left undisturbed. If the plants are not numerous, the second mowing may be dispensed with, and the plants be removed by hand. Stock Photo")
RMRJ22AG–. The first principles of agriculture [microform]. Agriculture; Agriculture. THE WEEDS OF THE FARM. 103 (2) If the infested field be in meadow, and the rag-weed plants be numerous, give the field two mowings, both, however, before the time for the ripening of the seed; and let the mowings be made close to the surface. This precaution *s necessary, since, the seeds of the ra^f-weed being formed low down on its stem, were the mowing not close to the surfnce, they might be left undisturbed. If the plants are not numerous, the second mowing may be dispensed with, and the plants be removed by hand.
RMRGJ5WE–. Bulletin of the British Museum (Natural History) Geology Supplement. ESPECIALLY MYCTOPHOIDS 207 canal also transmitted the preopercular sensory canal. Laterally the pterotic is deeply excavated as the dilatator fossa. The anterior part of this fossa is however formed from a postero-dorsal excavation of the sphenotic, and the suture between the pterotic and sphenotic is visible both above and below the fossa. The post-temporal fossa is large and partially roofed, the roof being composed anteriorly of frontal and posteriorly of parietal and pterotic. The lateral wall and. spo f.hm VII hm par 1
RMRDRCEX–. Natural history. For the use of schools and families. Zoology. EUMINAUT QUADRUPEDS. 99 general appearance, but they are much smaller, and they have no horns. The true Musk-deei', Fig. 83, is found. Fig. S3.—The Musk-deer. in the central part of Asia. The musk is contained in a pouch. Its perfume is so strong when pure and fresh, that the hunter, after killing the animal, is obliged to cover his nostrils with cloth before he secures the pouch, else he will have severe headache, and perhaps violent bleeding from the nose. 169. This substance, the most powerful perfume in the world, is formed f
RMRDG9WB–. The natural history of plants, their forms, growth, reproduction, and distribution;. Botany. DISPERSAL BY ANIMALS. 829 Here some of the spherical, closely-crowded lateral shoots growing from the old plant loosen spontaneously and fall to the ground; others again remain in situ but adhere very slightly, so that a passing contact or a gentle touch is enough to complete the separation from the old plant. Now bristles are formed at the top of each papilla of these Mamilkrias, some of which end in barbs, so that the spherical shoots resemble burs. They adhere just like burs to the hairy paws or f
RMRD3P4T–. Cyclopedia of American horticulture, comprising suggestions for cultivation of horticultural plants, descriptions of the species of fruits, vegetables, flowers, and ornamental plants sold in the United States and Canada, together with geographical and biographical sketches. Gardening. 1326 PHYSIOLOGY PHYSIOLOGY coiicerued in the conduction of the digested or leaf- formed foods to other parts. Seed Prodiietion.^So far as we know, the ultimate function of a plant in nature is to produce seeds or to reproduce its kind. It matters not how far the horti- culturist may have diverted this natural f
RMREFG26–. Comparative anatomy. Anatomy, Comparative. REPRODUCTION 105 Since the perichondrium is produced by mesenchyme, the bone is indirectly a derivative of mesenchyme. In the development of certain of the more superficial bones of the cranium, the outer bones of the jaw skeleton and some parts of the shoulder girdle, no cartilage is formed. At the site of the prospective bone, mesenchyme produces a fibrous tissue whose fibers become calcified (Fig. 78). Mesenchyme cells, becoming osteoblasts, congregate on the surfaces of the strands or spicules of this calcified spongy matrix and, using it as a f
![. The biology of the protozoa. Protozoa; Protozoa. cr-' /. Fig. 171.—Endamotha dysenteriae. A, typical trophic ameba with red blood corpuscle found in dysenteric stools; B and C, encysted individuals about ready for excystment; D, cyst with eight nuclei and chromatoid bodies. (After Cleveland and Sanders, Arch. f. Protistenkunde; courtesy of G. Fischer.) podia which are suddenly formed and withdrawn with equal speed. The endoplasm is densely granular and in addition to the nucleus contains food vacuoles, "chromatoid" bodies and numerous small granules which stain intra vitam with neu Stock Photo](https://c8.alamy.com/comp/RHK0T6/the-biology-of-the-protozoa-protozoa-protozoa-cr-fig-171endamotha-dysenteriae-a-typical-trophic-ameba-with-red-blood-corpuscle-found-in-dysenteric-stools-b-and-c-encysted-individuals-about-ready-for-excystment-d-cyst-with-eight-nuclei-and-chromatoid-bodies-after-cleveland-and-sanders-arch-f-protistenkunde-courtesy-of-g-fischer-podia-which-are-suddenly-formed-and-withdrawn-with-equal-speed-the-endoplasm-is-densely-granular-and-in-addition-to-the-nucleus-contains-food-vacuoles-quotchromatoidquot-bodies-and-numerous-small-granules-which-stain-intra-vitam-with-neu-RHK0T6.jpg ". The biology of the protozoa. Protozoa; Protozoa. cr-' /. Fig. 171.—Endamotha dysenteriae. A, typical trophic ameba with red blood corpuscle found in dysenteric stools; B and C, encysted individuals about ready for excystment; D, cyst with eight nuclei and chromatoid bodies. (After Cleveland and Sanders, Arch. f. Protistenkunde; courtesy of G. Fischer.) podia which are suddenly formed and withdrawn with equal speed. The endoplasm is densely granular and in addition to the nucleus contains food vacuoles, "chromatoid" bodies and numerous small granules which stain intra vitam with neu Stock Photo")
RMRHK0T6–. The biology of the protozoa. Protozoa; Protozoa. cr-' /. Fig. 171.—Endamotha dysenteriae. A, typical trophic ameba with red blood corpuscle found in dysenteric stools; B and C, encysted individuals about ready for excystment; D, cyst with eight nuclei and chromatoid bodies. (After Cleveland and Sanders, Arch. f. Protistenkunde; courtesy of G. Fischer.) podia which are suddenly formed and withdrawn with equal speed. The endoplasm is densely granular and in addition to the nucleus contains food vacuoles, "chromatoid" bodies and numerous small granules which stain intra vitam with neu
RMRD3J13–. The cytology and life-history of bacteria. Bacteria. Fig. 33 FATE OF CHROMOSOMES IN CELL DIVISION A. Equational division. This does not occur in bacteria. Even if the occurrence of a classical mitosis (for which there is no reliable evidence) were accepted, it would entail migration of chromosomes across their own partners and across the newly-formed cell division. B. Reductional division. This appears to be the normal condition in bacteria. It was originally postulated bv cytologists (e.g. in the first edition of this book), but is now supported by genetical evidence also (e.g., Ryan, F. J.
RMRFR7ND–. Carnegie Institution of Washington publication. THE OLDER SPOROPHYTE 181 at an earlier period. The mucilage ducts throughout the life of the sporophyte are less conspicuous in Kaulfussia than in Dance a. A section taken at the level of the stem apex in the very young sporophyte (fig. 137) presents an appearance not unlike that found in the bud in Ophioglossum. The base of the cotyledon extends around the stem apex, so that in the section the stem apex and the second leaf are inclosed in this cavity formed by the stipular sheath of the cotyledon. Higher up, the base of the cotyledon becomes f
![. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. FIG. 3. FIG. 4. tentacles formed, while at about the same time new otocysts devel- oped. As suggested under the second set these bulbs are prob- ably aggregations of new tissue, and are perhaps comparable to the tentacle " anlagen " in regenerating hydroids. Fig. 4 shows the portion of the margin from which the tentacles were excised, o represents otocysts and / the new tentacles. It will be seen that the pads or bulbs b found at the bases of the old tentacles are lack- ing in the new tentacles at this stage, and f Stock Photo](https://c8.alamy.com/comp/RHRC7Y/the-biological-bulletin-biology-zoology-biology-marine-biology-fig-3-fig-4-tentacles-formed-while-at-about-the-same-time-new-otocysts-devel-oped-as-suggested-under-the-second-set-these-bulbs-are-prob-ably-aggregations-of-new-tissue-and-are-perhaps-comparable-to-the-tentacle-quot-anlagen-quot-in-regenerating-hydroids-fig-4-shows-the-portion-of-the-margin-from-which-the-tentacles-were-excised-o-represents-otocysts-and-the-new-tentacles-it-will-be-seen-that-the-pads-or-bulbs-b-found-at-the-bases-of-the-old-tentacles-are-lack-ing-in-the-new-tentacles-at-this-stage-and-f-RHRC7Y.jpg ". The Biological bulletin. Biology; Zoology; Biology; Marine Biology. FIG. 3. FIG. 4. tentacles formed, while at about the same time new otocysts devel- oped. As suggested under the second set these bulbs are prob- ably aggregations of new tissue, and are perhaps comparable to the tentacle " anlagen " in regenerating hydroids. Fig. 4 shows the portion of the margin from which the tentacles were excised, o represents otocysts and / the new tentacles. It will be seen that the pads or bulbs b found at the bases of the old tentacles are lack- ing in the new tentacles at this stage, and f Stock Photo")
RMRHRC7Y–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. FIG. 3. FIG. 4. tentacles formed, while at about the same time new otocysts devel- oped. As suggested under the second set these bulbs are prob- ably aggregations of new tissue, and are perhaps comparable to the tentacle " anlagen " in regenerating hydroids. Fig. 4 shows the portion of the margin from which the tentacles were excised, o represents otocysts and / the new tentacles. It will be seen that the pads or bulbs b found at the bases of the old tentacles are lack- ing in the new tentacles at this stage, and f
![. The natural history of birds [microform] : from the French of the Count de Buffon. Ornithology; Birds; Ornithologie; Oiseaux. 300 THE RING OUZEL. 'â |! ' ( M : t ' I' *. fo yellow ; by the fiiape of the middle-quills of the wings, which arc fquare at the end, with a fmall projecting point in the centre, formed by the extremity of the Hiaft j laftly, by its cry*, which is different, as alfo its habits and difpo- fitions. It is a real bird of paflage, though its route cannot be prccifely traced. It follows the chain of tlie mountains, but does not keep in any certain track f. It feldom appears Stock Photo](https://c8.alamy.com/comp/RHY6KE/the-natural-history-of-birds-microform-from-the-french-of-the-count-de-buffon-ornithology-birds-ornithologie-oiseaux-300-the-ring-ouzel-!-m-t-i-fo-yellow-by-the-fiiape-of-the-middle-quills-of-the-wings-which-arc-fquare-at-the-end-with-a-fmall-projecting-point-in-the-centre-formed-by-the-extremity-of-the-hiaft-j-laftly-by-its-cry-which-is-different-as-alfo-its-habits-and-difpo-fitions-it-is-a-real-bird-of-paflage-though-its-route-cannot-be-prccifely-traced-it-follows-the-chain-of-tlie-mountains-but-does-not-keep-in-any-certain-track-f-it-feldom-appears-RHY6KE.jpg ". The natural history of birds [microform] : from the French of the Count de Buffon. Ornithology; Birds; Ornithologie; Oiseaux. 300 THE RING OUZEL. 'â |! ' ( M : t ' I' *. fo yellow ; by the fiiape of the middle-quills of the wings, which arc fquare at the end, with a fmall projecting point in the centre, formed by the extremity of the Hiaft j laftly, by its cry*, which is different, as alfo its habits and difpo- fitions. It is a real bird of paflage, though its route cannot be prccifely traced. It follows the chain of tlie mountains, but does not keep in any certain track f. It feldom appears Stock Photo")
RMRHY6KE–. The natural history of birds [microform] : from the French of the Count de Buffon. Ornithology; Birds; Ornithologie; Oiseaux. 300 THE RING OUZEL. 'â |! ' ( M : t ' I' *. fo yellow ; by the fiiape of the middle-quills of the wings, which arc fquare at the end, with a fmall projecting point in the centre, formed by the extremity of the Hiaft j laftly, by its cry*, which is different, as alfo its habits and difpo- fitions. It is a real bird of paflage, though its route cannot be prccifely traced. It follows the chain of tlie mountains, but does not keep in any certain track f. It feldom appears
RMRPEFG5–. The American farmer's horse book; a pictorial cyclopedia of facts concerning the prominent breeds ... Horses. OUTLINP: of the horse S STRUCTUItE. 149 Another View.—We present another view of the skeleton (from the left instead of the right side), showing also the outline of the horse's form, as some of our readers will doubtless prefer. Its ex- planation is as follows:. Commencing at the head, C shows the atlas; F the withers and below the dorsal vertebra^, the withers being formed by spinous pro- cesses of the anterior dorsal vertebrsB; G, lumbar vertebra?; H, sacral vertebras; I, coccygeal
![. Revisions of the North American bats of the family Vespertilionid[a]e [microform]. Bats; Chauves-souris. OKOORAPHIC VARIATION. iddition to than that of tlieadultHHixl th iiiiiiiatiire Hkull dill'ers in si/.e and torni t'roni that of the adult, but as the sutures disappear at an early ajje. it is (d'ten somewhat ditllcult to recojjni; <,'. 1 have found that tlu- best j;«'f the linger Joints. In spcciinenM young enonjfh to furnish unreliable characters these are always large and loosely formed, with opi|ihyses separate from the ends of the phalanges and metacarpals, bi>th of which are di Stock Photo](https://c8.alamy.com/comp/RJ4002/revisions-of-the-north-american-bats-of-the-family-vespertilionid-a-e-microform-bats-chauves-souris-okooraphic-variation-iddition-to-than-that-of-tlieadulthhixl-th-iiiiiiiatiire-hkull-dillers-in-sie-and-torni-troni-that-of-the-adult-but-as-the-sutures-disappear-at-an-early-ajje-it-is-dten-somewhat-ditllcult-to-recojjni-lt-1-have-found-that-tlu-best-jf-the-linger-joints-in-spcciinenm-young-enonjfh-to-furnish-unreliable-characters-these-are-always-large-and-loosely-formed-with-opiihyses-separate-from-the-ends-of-the-phalanges-and-metacarpals-bigtth-of-which-are-di-RJ4002.jpg ". Revisions of the North American bats of the family Vespertilionid[a]e [microform]. Bats; Chauves-souris. OKOORAPHIC VARIATION. iddition to than that of tlieadultHHixl th iiiiiiiatiire Hkull dill'ers in si/.e and torni t'roni that of the adult, but as the sutures disappear at an early ajje. it is (d'ten somewhat ditllcult to recojjni; <,'. 1 have found that tlu- best j;«'f the linger Joints. In spcciinenM young enonjfh to furnish unreliable characters these are always large and loosely formed, with opi|ihyses separate from the ends of the phalanges and metacarpals, bi>th of which are di Stock Photo")
RMRJ4002–. Revisions of the North American bats of the family Vespertilionid[a]e [microform]. Bats; Chauves-souris. OKOORAPHIC VARIATION. iddition to than that of tlieadultHHixl th iiiiiiiatiire Hkull dill'ers in si/.e and torni t'roni that of the adult, but as the sutures disappear at an early ajje. it is (d'ten somewhat ditllcult to recojjni; <,'. 1 have found that tlu- best j;«'f the linger Joints. In spcciinenM young enonjfh to furnish unreliable characters these are always large and loosely formed, with opi|ihyses separate from the ends of the phalanges and metacarpals, bi>th of which are di
RMRE5A5N–. Crustacea. Tanaidacea -- Antarctica; Isopoda -- Antarctica; Crustacea -- Antarctica; Mollusks -- Antarctica. B.. FIG. 1.—First pair of pleopods of male. A, Antarcturus. B, Psi'iularctureUa. b. basipodite ; en. endopodite ; ex. exopodite ; ;/. groove ; /. lobe oil inner margin of exopodite ; p.f. peuial filament. first pair of pleopods in the males of that genus as they appear when the animal is laid on its dorsal surface and the doors of the operculum opened. In the median line lies the penial filament (formed by fusion of the two filaments present in most Isopods), which is about as long as
RMRMAAM5–. Annual report. Entomological Society of Ontario; Insect pests; Insects -- Ontario Periodicals. F'«' 31- by fastening together a few leaves •with silken threads, in the interior of which the larva spins a second strong and very close cocoon in which it changes into the pupa (Fig 32). These cocoonB fall with tlie leaves in the autumn, and remain on the ground during the winter until the perfect insect emerges. The pupa is very thick and short, and shows very clearly the antennae and wings. The larva takes about a week to coraplete its co- eoon. The silk of which the inner one is formed is very
RMRH50HC–. British Antarctic expedition, 1907-9, under the command of E.H. Shackleton : reports on the scientific investigations ; geology. Scientific expeditions; Natural history; Geology; Paleontology; Petrology; Ice. PLATE VII. Fig. 1. FROST-SPICULES FORMED AT —30° F. OX THE FACE OF THE SPECTROSCOPIC CAMERA. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Shackleton, Ernest Henry, Sir, 1874-1922. London : Published for the expedi
RMRJ8J0M–. The chemistry and physiology of growth. Growth; Biochemistry. f^^^. * ** Plate II. Induction of cartilage formation by dead cartilage graft in Amblystonia tigrinum (X 185). A metatarsal bone, quick-frozen in isopentane at —i59°C, debydrated in vacuo at —40°C, reliydrated in Ringer's solution, and transplanted into the tarsus of another premetamorphic specimen of the same species, has healed in; new cartilage and a new perichondrium have formed along most of the surface of the epiphysis of the graft, which has become detached from the bony shaft, seen in the right half of the picture. The new
RMRE1NPB–. College botany; structure, physiology and economics of plants. Botany. PLANT PRODUCTS 137 (mannaiis and galactans) which are very similar to true cellu- lose. They are deposited on the inner surfaces of the walls of cells and are very readily transformed into sugars. They give the hard, horn-like character to coffee and date seeds and are im- portant foods in the germination of these f^eeds. The alkaloids are supposed to be formed in tlio protoplasm, but are later found in the cell sap in combination with the vari- ous plant,acids. They contain nitrogen, e;n-bon, hydrogen and sometimes oxyge
RMRN4RGH–. Animal parasites and parasitic diseases. Horses; Domestic animals -- Parasites; Veterinary medicine. PARASITOLOGY. 149. Fig. 5Sa. Unoinaria Canina. Fig'. 58a.—S'ection of body of female, magnified lOO diameters, showing the ova to liave formed in worm, not to excede five weeks old.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Kaupp, B. F. (Benjamin Franklyn), 1874-. Chicago : A. Eger
RMREF7TA–. Comparative morphology of Fungi. Fungi. 258 COMPARATIVE MORPHOLOGY OF FUNGI and some relatives (like Aspergillus herbariorum) a helical ascogonium is formed, from whose stipe springs an antheridium which climbs along the helix. At times the antheridium may also be lacking (Oltmanns, 1887). In some species of Sordaria (as in PeniciUium crustaceum) antheridium and ascogonium coil helically (Nichols, 1896). In some other forms as Chaetomium spirale, C. globosum (C. Kunzeanum var. chlorinum) (Vallory, 1911), Sordaria fimicola (Fimetaria fimicola), S. merdaria (F. merdaria) and Podospora hirsuta
RMRDKG96–. The Cambridge natural history. Zoology. 336 COELENTERATA ANTHOZOA pact as the substance of a pearl. In Paragorgia and some other closely related genera the spicules of the axis of the colony also become tightly wedged together, but the core thus formed is far more porous and brittle than it is in the Coralliidae. In n^ '. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Harmer, S. F. (Sidney Frederic), Sir, 1862- ed; Shipl
RMRE0E80–. A laboratory manual and text-book of embryology. Embryology. MATURATION 27 The way in which the number of chromosomes is reduced may be seen in the spermatogenesis of Ascaris (Fig. 11). Four chromosomes are typical for Ascaris megalocephala bivalens and each resting primary spermatocyte contains this number. When the first maturation spindle appears only two chromosomes are formed, but each of these is double, so four are really present. Each represents the union of two chromosomes, shows a quadruple structure, and is termed a tetrad (Fig. 11 E, F). At the metaphase (G) the two tetrads split
RMRD659F–. The cyclopædia of anatomy and physiology. Anatomy; Physiology; Zoology. OVUM. 15 testine, and anus, and moves actively through the water. Sars who had observed this body in 1835, was the first to suggest in 1844 that it might be the early condition of a star-fish*, and this view was confirmed by the admirable researches of J. Miiller f, and by observations of Koren and DanielsonJ, who have shown that the Asterias is gradually formed out of a small granular mass which surrounds the stomach of the Bipinnaria, and becomes se- parated from the stock when in a compara- tively early state of advan
RMRH8YWJ–. Botany for high schools. Botany. CHAPTER XX. THE FRUIT. I. PARTS OF THE FRUIT. 307. The fruit of the plant is the final result of the work of the flower. The seed is formed in connection with the fruit, usually within the fruit. It is the end or aim for which the plant throughout its life has been working, in order that through the seed the plant may be multiplied, distributed,* and invigorated. The word seed is often used to denote any reproductive body which may be planted or sown to reproduce that plant again. In u strict sense, however, seeds are only formed by the true seed plants, f Th
![. The insect book [microform] : a popular account of the bees, wasps, ants, grasshoppers, flies and other North American insects exclusive of the butterflies, moths and beetles, with full life histories, tables and bibliographies. Insectes; Insects. ^m- f u FAMILY RHY/ICOTHILIDA. The insects of this group have a broader distribution and more of them extend to the south than any of the preceding families. The flies are stnall or of medium size. The larv;e are found in rapid streams and, instead of making free cases with which to move about, their r;i>;es are formed of small stones fastened w Stock Photo](https://c8.alamy.com/comp/REN1G4/the-insect-book-microform-a-popular-account-of-the-bees-wasps-ants-grasshoppers-flies-and-other-north-american-insects-exclusive-of-the-butterflies-moths-and-beetles-with-full-life-histories-tables-and-bibliographies-insectes-insects-m-f-u-family-rhyicothilida-the-insects-of-this-group-have-a-broader-distribution-and-more-of-them-extend-to-the-south-than-any-of-the-preceding-families-the-flies-are-stnall-or-of-medium-size-the-larve-are-found-in-rapid-streams-and-instead-of-making-free-cases-with-which-to-move-about-their-rigtes-are-formed-of-small-stones-fastened-w-REN1G4.jpg ". The insect book [microform] : a popular account of the bees, wasps, ants, grasshoppers, flies and other North American insects exclusive of the butterflies, moths and beetles, with full life histories, tables and bibliographies. Insectes; Insects. ^m- f u FAMILY RHY/ICOTHILIDA. The insects of this group have a broader distribution and more of them extend to the south than any of the preceding families. The flies are stnall or of medium size. The larv;e are found in rapid streams and, instead of making free cases with which to move about, their r;i>;es are formed of small stones fastened w Stock Photo")
RMREN1G4–. The insect book [microform] : a popular account of the bees, wasps, ants, grasshoppers, flies and other North American insects exclusive of the butterflies, moths and beetles, with full life histories, tables and bibliographies. Insectes; Insects. ^m- f u FAMILY RHY/ICOTHILIDA. The insects of this group have a broader distribution and more of them extend to the south than any of the preceding families. The flies are stnall or of medium size. The larv;e are found in rapid streams and, instead of making free cases with which to move about, their r;i>;es are formed of small stones fastened w
RMRM58HC–. Annual report of the Board of Regents of the Smithsonian Institution. Smithsonian Institution; Smithsonian Institution. Archives; Discoveries in science. 484 thp: restoration of extinct animals. B. Waterhouse Hawkins was placed in charge of the undertaking. As it was not intended that these figures should l)e approac^hed closeh'^ they were built on a gigantic scale and located on a small wooded islet where they formed conspicuous features in the hmdscape. The size of the figures ma}' })e inferred from the materials used in constructing the Iguanodon, for these comprised four iron colunms 9 f
RMRE3MKG–. Introduction to cryptogamic botany. Cryptogams. INTRODUCTION TO CRYPTOGAMIC BOTANY. 155 collections, which requires especial notice, as it is the only instance I know, in this group, of the peculiar structure which it exhibits. The threads at first are like those of an ordinary Tyndaridea, but after a time little swellings occur on their sides in which a distinct endochrome is formed, extending backwards into the parent endochrome, separated from it by a well-defined mem- brane, and producing either by repeated puUulation a com- pound mass like that of Calothrix, or simply giving rise to a f
RMREHCY9–. Columbia River fisheries development program. Fisheries Columbia River.. CONDITION OF THE RESOURCE Pacific salmon and steelhead trout have played an important role in the history of the Pacific North- west and the Columbia River Basin. Long before settlers and opportunity seekers came to the North- west, tribes of Indians were involved in subsistence fishery. Using mainly spears and dipnets, Indians annually caught large quantities of salmon and steelhead which they preserved by drying or smoking (Figures 2 and 3). These preserved fish formed an important part of the Indians' food supply.. F
RMRM74AK–. Annual report of the Agricultural Experiment Station. Cornell University. Agricultural Experiment Station; Agriculture -- New York (State). of a wound here was largely ol)literated because the old bark had formed over the surface. There was only a minute oj^ening, very obscure, which was not completely healed over. Bv exaininino; successive sections of the trunk below this one it was observed that this black '' core'' representing the broken por- tion (»f the young tree gradually came to lie exactlv in the central core of the trunk. This indicates quite clearly that the injury oc- curred to
![. Carnegie Institution of Washington publication. 26 ClIIMyEROID FISHES AND THEIR DEVELOPMENT. the oviducts was made, for the filaments were so perfectly formed that they might well have 3-ielded some interesting notes as to their terminal. That this is finally a bulbous organ there can now be no doubt. Ah Tack early made a drawing of it, but the writer's skepticism* continued until word was received from Dr. Wilbur (May i, 1899) that he had himself seen the terminal organ, describing it as a "sort of disc," and figuring it (plate 1, fig. 3) very much as Ah Tack had done.f From all t Stock Photo](https://c8.alamy.com/comp/RFT0PK/carnegie-institution-of-washington-publication-26-cliimyeroid-fishes-and-their-development-the-oviducts-was-made-for-the-filaments-were-so-perfectly-formed-that-they-might-well-have-3-ielded-some-interesting-notes-as-to-their-terminal-that-this-is-finally-a-bulbous-organ-there-can-now-be-no-doubt-ah-tack-early-made-a-drawing-of-it-but-the-writers-skepticism-continued-until-word-was-received-from-dr-wilbur-may-i-1899-that-he-had-himself-seen-the-terminal-organ-describing-it-as-a-quotsort-of-discquot-and-figuring-it-plate-1-fig-3-very-much-as-ah-tack-had-donef-from-all-t-RFT0PK.jpg ". Carnegie Institution of Washington publication. 26 ClIIMyEROID FISHES AND THEIR DEVELOPMENT. the oviducts was made, for the filaments were so perfectly formed that they might well have 3-ielded some interesting notes as to their terminal. That this is finally a bulbous organ there can now be no doubt. Ah Tack early made a drawing of it, but the writer's skepticism* continued until word was received from Dr. Wilbur (May i, 1899) that he had himself seen the terminal organ, describing it as a "sort of disc," and figuring it (plate 1, fig. 3) very much as Ah Tack had done.f From all t Stock Photo")
RMRFT0PK–. Carnegie Institution of Washington publication. 26 ClIIMyEROID FISHES AND THEIR DEVELOPMENT. the oviducts was made, for the filaments were so perfectly formed that they might well have 3-ielded some interesting notes as to their terminal. That this is finally a bulbous organ there can now be no doubt. Ah Tack early made a drawing of it, but the writer's skepticism* continued until word was received from Dr. Wilbur (May i, 1899) that he had himself seen the terminal organ, describing it as a "sort of disc," and figuring it (plate 1, fig. 3) very much as Ah Tack had done.f From all t
RMRDJ6A9–. A manual of zoology. Zoology. II. ACERATA: LINGUATULIDA 397 into a sucking beak. This consists of a tube formed by the basal joints of the pedipalpi, in which the chehcerx, either chelate, clawed, or stylet-like, play Since the mites are small and half or wholly parasitic, they are much simplified in structure. Frequently heart and trache£e are lacking. The larva as it escapes from the egg lacks the last pair of legs and then closely resembles certain imperfectly segmented parasitic insects like the lice. The red mites (Trombidiid.-e) and water mites, HYDRACHNlDa; (Hydraclma* Atax'^'), are f
RMRDG3H7–. The natural history of plants. Botany. 12 NATURAL HISTORY OF PLANTS. SoiteHla margaritacca.. Fig. 17. Flower (f). Fig. IS. Lonn;. sect flower. of anthers are bilobed at the summit, with the pore of dehiscence situated at the bottom of the hollow separating the two lobes. Phyllagathis has also a capitate inflorescence (in reality formed of uniparous cymes), sur- rounded by an involucre generally formed of large bracts. The flowers, 3, 4-merous and diploste- monous, have a cam- panulate receptacle and sepals ciliate at the mar- gin, sometimes with al- ternate rigid hairs. The cells of the poin
RMRHRMC1–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. J. F. McCLENDON. genital segment, where they are much convoluted and increase greatly in diameter and each communicates by an opening, the os uteri, with an egg string that trails behind the animal. The ovary is formed of a much convoluted cord of cells in a single linear series, small at the oogonial end and gradually increasing in diameter until it passes into the oviduct. As these cells (oocytes) grow in the ovary they become much compressed in the direc- tion of the long axis of the cord and the cell boundaries almost co
RMRJD4H8–. Cellular toxins; or, The chemical factors in the causation of disease. Poisons; Pathology; Bacteria. 130 THE LYSINS. Fig. 1.. -..JEJ DemonBtrating Ehrlich's Theory. A, complement; B, intermediary Body ; part of cell; JS, toxophorous group of toxin ; F, haptophorous group. C, receptor; B, If there be no receptors the intermediary body cannot combine with the corpuscle and consequently there is no hemolysis. Anti- hemolysins are supposed to be formed in the body of the animal treated with hemolytic serum in the same way that antitoxins are formed in the bodies of animals immunized to the toxin
![. The natural history of birds [microform] : from the French of the Count de Buffon. Ornithology; Birds; Ornithologie; Oiseaux. 300 THE RING OUZEL. 'â |! ' ( M : t ' I' *. fo yellow ; by the fiiape of the middle-quills of the wings, which arc fquare at the end, with a fmall projecting point in the centre, formed by the extremity of the Hiaft j laftly, by its cry*, which is different, as alfo its habits and difpo- fitions. It is a real bird of paflage, though its route cannot be prccifely traced. It follows the chain of tlie mountains, but does not keep in any certain track f. It feldom appears Stock Photo](https://c8.alamy.com/comp/RETGXA/the-natural-history-of-birds-microform-from-the-french-of-the-count-de-buffon-ornithology-birds-ornithologie-oiseaux-300-the-ring-ouzel-!-m-t-i-fo-yellow-by-the-fiiape-of-the-middle-quills-of-the-wings-which-arc-fquare-at-the-end-with-a-fmall-projecting-point-in-the-centre-formed-by-the-extremity-of-the-hiaft-j-laftly-by-its-cry-which-is-different-as-alfo-its-habits-and-difpo-fitions-it-is-a-real-bird-of-paflage-though-its-route-cannot-be-prccifely-traced-it-follows-the-chain-of-tlie-mountains-but-does-not-keep-in-any-certain-track-f-it-feldom-appears-RETGXA.jpg ". The natural history of birds [microform] : from the French of the Count de Buffon. Ornithology; Birds; Ornithologie; Oiseaux. 300 THE RING OUZEL. 'â |! ' ( M : t ' I' *. fo yellow ; by the fiiape of the middle-quills of the wings, which arc fquare at the end, with a fmall projecting point in the centre, formed by the extremity of the Hiaft j laftly, by its cry*, which is different, as alfo its habits and difpo- fitions. It is a real bird of paflage, though its route cannot be prccifely traced. It follows the chain of tlie mountains, but does not keep in any certain track f. It feldom appears Stock Photo")
RMRETGXA–. The natural history of birds [microform] : from the French of the Count de Buffon. Ornithology; Birds; Ornithologie; Oiseaux. 300 THE RING OUZEL. 'â |! ' ( M : t ' I' *. fo yellow ; by the fiiape of the middle-quills of the wings, which arc fquare at the end, with a fmall projecting point in the centre, formed by the extremity of the Hiaft j laftly, by its cry*, which is different, as alfo its habits and difpo- fitions. It is a real bird of paflage, though its route cannot be prccifely traced. It follows the chain of tlie mountains, but does not keep in any certain track f. It feldom appears
RMRDY5KX–. The anatomy of the domestic animals . Veterinary anatomy. Fig. 711.—Cross-section of Foot op Horse, Cut Parallel with the Coeonaet Border. The wall appears much thicker at the angles than it actually is, because it is cut very obliquely. In the case of unshod horses at hberty the wall is usually worn off to the level of the adjacent sole, but if the ground is too soft the wall is likely to become unduly long and spUt or break or undergo deformation. On very hard or rough ground, on the other hand, the wear may be in ex- Periople Coronary groove. Periople of heel Ridge formed c , by bar and f
RMRHM320–. Biological series. Biology. Adamstone: Rates of Growth of Pike Perch 79 in this position. This apparently marks a summer's growth since all the specimens were obtained in summer. The central portion of each scale is surrounded by a dark area which must necessarily represent a late summer's growth and the first winter period, since the fish hatch in spring and the central portion of the scale would be formed during the first summer. This is shown by the illustration of the scale of the smallest blue pike perch in Fig. 2. By counting the number of dark bands present on a scale the age of the f
RMRJ5K4X–. Chordate morphology. Morphology (Animals); Chordata. opisthospondylous ring vertebral ring. ntervertebrol ligament Figure 6-12. Composition of bird vertebra in terms of Gadowian elements said to be indicated by blostematic condensations. A, lateral view; B, frontal section of vertebra; C to F, cross sections at levels C to F' of A. a dorsal and a ventral plate are formed (perichondral or subperichondral). These plates are soon joined by a vertical pillar, perforated by the much constricted notochord, through the cartilage of the centrum. When arch, centrum, and rib are well formed in bone, f
RMRN5KMR–. The animal creation: a popular introduction to zoology. Zoology. LEPIDOPTERA, 163 This nest is formed of a single filament of silk wrapped around the animal, and its tui-ns are glued together by iT V a^. f-K Fig. 123.—silkworm on mulbeekt-leaf. a kind of gum. It is estimated that the length of the filament in an ordinary cocoon is nine hundred feet. The form of the cocoon is oval, and its colour either yellow or white.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations
RMRDXG1D–. The origin of a land flora, a theory based upon the facts of alternation. Plant morphology. EMBRYOLOGY 359 other parts originate from the epibasal tier: the cotyledon with its ligule is the first part to be organised: it is followed soon by the first root, which arises at the opposite side of the epibasal tier to the cotyledon (Fig. 191 c, d, e, f). Between these parts a slight depression is formed, and it is surrounded by a semicircular ridge: within this the apex of the axis is at last organised, and it soon gives rise to the second leaf, which. Fig. 191. Jsoetes echinospora, var. Braunii,
RMRD2ADB–. Cytology, with special reference to the metazoan nucleus. Cells. 78 CYTOLOGY CHAP. of the early cleavage stages are double, each portion being the direct descendant of one of the gamete nuclei. Each constituent of such a double nucleus is called a gonomere. In prophase each gonomere forms its chromosomes separately from the other. The two groups of chromosomes thus formed are usually indistinguishable from one another after the break-down of the nuclear membrane, but in telophase they become recognizable again owing to the fact that the group of chromosomes derived from each gonomere again f
RMRHK1F1–. The biology of the protozoa. Protozoa; Protozoa. PHENOMENA ACCOMPANYING FERTILIZATION 293 two individuals come together as in pseudo-conjugation of gre- garines; they secrete a common cyst membrane and then fuse completely. In isogamic and often in anisogamic fertilization, fusion begins as a rule with union of the flagellated ends, if the gametes are motile A B. Fig. 146.—Cycloposthium bipalmatum and Diplodinium triloricatum; conjugation. .1, Cycloposthium with the two migrating pronuclei in the chamber formed by the two peristomial spaces; B, same, the two migrating pronuclei have passed f
RMRN95DF–. Anatomischer Anzeiger. Anatomy, Comparative; Anatomy, Comparative. 146 number produced in the upper jaw (though they are not all present at any one stage) is about 20 on each side. These posterior alternating teeth are much larger in size than the anterior, and while they are being formed the latter are undergoing displacement by vertical suc- cessors (Figs. 2 and 3). It will be noted that in the upper jaw the behaviour of the alternating series differs greatly from that of the same series in the lower jaw, for whereas in the former the teeth enlarge in size and separate from one an- other f
![. The illustrated natural history [microform]. Reptiles; Fishes; Mollusks; Natural history; Reptiles; Poissons; Mollusques; Sciences naturelles. THE PTEROPODA. 415 The Sea Lizard is very common in many parts of the Atlantic, where it is fuund in vast mimbcrs during a calm and when the sea is smooth. Mr. F. D. Bennett writes as follows about tliis strange and eccentrically formed being. "These creatures obtain ill f.n'oatest luunber wliere currents most pi'evail; they are active and very predatory in their liabits, and would appear, from tlie observations of my brother, which I have alrwKl Stock Photo](https://c8.alamy.com/comp/REPRGX/the-illustrated-natural-history-microform-reptiles-fishes-mollusks-natural-history-reptiles-poissons-mollusques-sciences-naturelles-the-pteropoda-415-the-sea-lizard-is-very-common-in-many-parts-of-the-atlantic-where-it-is-fuund-in-vast-mimbcrs-during-a-calm-and-when-the-sea-is-smooth-mr-f-d-bennett-writes-as-follows-about-tliis-strange-and-eccentrically-formed-being-quotthese-creatures-obtain-ill-fnoatest-luunber-wliere-currents-most-pievail-they-are-active-and-very-predatory-in-their-liabits-and-would-appear-from-tlie-observations-of-my-brother-which-i-have-alrwkl-REPRGX.jpg ". The illustrated natural history [microform]. Reptiles; Fishes; Mollusks; Natural history; Reptiles; Poissons; Mollusques; Sciences naturelles. THE PTEROPODA. 415 The Sea Lizard is very common in many parts of the Atlantic, where it is fuund in vast mimbcrs during a calm and when the sea is smooth. Mr. F. D. Bennett writes as follows about tliis strange and eccentrically formed being. "These creatures obtain ill f.n'oatest luunber wliere currents most pi'evail; they are active and very predatory in their liabits, and would appear, from tlie observations of my brother, which I have alrwKl Stock Photo")
RMREPRGX–. The illustrated natural history [microform]. Reptiles; Fishes; Mollusks; Natural history; Reptiles; Poissons; Mollusques; Sciences naturelles. THE PTEROPODA. 415 The Sea Lizard is very common in many parts of the Atlantic, where it is fuund in vast mimbcrs during a calm and when the sea is smooth. Mr. F. D. Bennett writes as follows about tliis strange and eccentrically formed being. "These creatures obtain ill f.n'oatest luunber wliere currents most pi'evail; they are active and very predatory in their liabits, and would appear, from tlie observations of my brother, which I have alrwKl
RMRE03PC–. A text-book of comparative physiology for students and practitioners of comparative (veterinary) medicine. Physiology, Comparative. DIGESTION OP POOD. 279 r ^-'â large part in the actual preparation of the food for absorption, ^-^^d these lie, of course, the vital properties of the glands, jare the active fluids from so that a study of diges- Hy divides itself into the in ofâ1. The digestive Che secretory processes; muscular and nervous by which the food is a one part of the digest- another, and the waste Ily expelled. .OgicaLâThe alimentary have seen, is formed by f of the splanchnopleure,
RMRDT0BR–. Text book of vertebrate zoology. Vertebrates; Anatomy, Comparative. THE EARLY HISTORY OF THE OVUM. 2H displaced from the centre, so that it comes to lie immediately beneath the protoplasmic pole. The layer of cells formed by this segmentation is e s i known as the blasto- -.â .'â f.|»jj7j;gpj79g;^ derm. In the teleosts where protoplasm and deutoplasm are sharply distinct, the protoplas- mic portions alone are segmented, the food yolk remaining undi- vided, and the segmen- tation cavity here lies between the blastoderm and the deutoplasmic mass. The little that is known of the development o
RMRPXMCT–. The comparative anatomy of the domesticated animals. Veterinary anatomy. THE F(ETU8, 909 Fig. 435.. and constitutes the commencement of the crystalline lens (Fig. 435, 2, /). The latter, thus formed, presses on the primitive eye-vesicle, pushes it backwards (2), and gives rise to a secondary eye-vesicle, whose anterior wall becomes the retina, and the posterior wall the choroid. The lens is, therefore, a dependency of the epithelial lamina ; the cells com- posing it become elongated into fibres in the centre, and are dis- posed at its circumference as a primary amorphous envelope— the crysta
RMRDGBNY–. The natural history of plants. Botany. Fig. 383. Mower (f). Fig. 386. Long. sect, of flower. number, alternate with the lobes, each formed of a filament' and a bilocular introrse anther dehiscing by two longitudinal clefts.^ The summit of the inferior ovary is surmounted by a disk often reduced Sambueus canadensis.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Baillon, Henri Ernest, 1827-1895; Hartog, Marcus Manuel, 18
RMRDF3F2–. The structure and development of mosses and ferns (Archegoniatae). Plant morphology; Mosses; Ferns. 62 MOSSES AND FERNS periclinal walls appear, but not at any stated time, so far as could be made out, and the first ones do not, as Leitgeb asserts, necessarily determine the separation of the archesporium, as in the Corsiniese. The growth now becomes unequal, the cells in the central zone not dividing so actively, a marked constriction is formed, and the young sporogonium becomes dumb-bell shaped. By this time a pretty definite layer of cells (Fig. 23, F) is evident upon the outside of the ca
RMRHK4TG–. Biology and man. Biology; Human beings. N Lymph. â ='^=^ ^ Capillary ^Food material Blood vessels HOW A GLAND SECRETES a.f: Materials are transformed in a gland by chemical action in the epithelial, or lining, cells. The raw materials are derived from the blood stream or the lymph. The specific substance formed by the gland is diffused out of the epithelial cells into the tube or pit which they surround. The secreted substance is discharged from the gland through a duct, or little tube. The excretions of the specific secreting cells are re- moved by osmosis into the lymph or blood, as in the
![. How plants grow [microform] : a simple introduction to structural botany with a popular flora, or an arrangement and description of common plants, both wild and cultivated. Botany; Ferns; Botanique; Fougères. 58 Dahllu roots. with food made by last j'ear's vegetation, nourish irv spiing the buds on the Ijiise of the stem just above {f the stem itself, formed under groiuid, and which contain the buds; as in the Ground Artichoke and the Grouna-Artidioke. Potato. Here these parts, with their buds, or eyes, are all that live over winter. These thickened ends of stems are called Tubers. In Fig. 5 Stock Photo](https://c8.alamy.com/comp/RJ5PK2/how-plants-grow-microform-a-simple-introduction-to-structural-botany-with-a-popular-flora-or-an-arrangement-and-description-of-common-plants-both-wild-and-cultivated-botany-ferns-botanique-fougres-58-dahllu-roots-with-food-made-by-last-jears-vegetation-nourish-irv-spiing-the-buds-on-the-ijiise-of-the-stem-just-above-f-the-stem-itself-formed-under-groiuid-and-which-contain-the-buds-as-in-the-ground-artichoke-and-the-grouna-artidioke-potato-here-these-parts-with-their-buds-or-eyes-are-all-that-live-over-winter-these-thickened-ends-of-stems-are-called-tubers-in-fig-5-RJ5PK2.jpg ". How plants grow [microform] : a simple introduction to structural botany with a popular flora, or an arrangement and description of common plants, both wild and cultivated. Botany; Ferns; Botanique; Fougères. 58 Dahllu roots. with food made by last j'ear's vegetation, nourish irv spiing the buds on the Ijiise of the stem just above {f the stem itself, formed under groiuid, and which contain the buds; as in the Ground Artichoke and the Grouna-Artidioke. Potato. Here these parts, with their buds, or eyes, are all that live over winter. These thickened ends of stems are called Tubers. In Fig. 5 Stock Photo")
RMRJ5PK2–. How plants grow [microform] : a simple introduction to structural botany with a popular flora, or an arrangement and description of common plants, both wild and cultivated. Botany; Ferns; Botanique; Fougères. 58 Dahllu roots. with food made by last j'ear's vegetation, nourish irv spiing the buds on the Ijiise of the stem just above {f the stem itself, formed under groiuid, and which contain the buds; as in the Ground Artichoke and the Grouna-Artidioke. Potato. Here these parts, with their buds, or eyes, are all that live over winter. These thickened ends of stems are called Tubers. In Fig. 5
RMRN4PA0–. Animal parasites and parasitic diseases. Domestic animals; Veterinary medicine. 174 PARASITOLOGY. The condition of the muscle being infested by these cysts is called measly pork; the cyst or larva cysticercus cellulosae. Symptoms,—In badly infested cases the cysts may be found bulging from the mucous surface of the sides of the tongue or phrenum, or from the conjunc- tival or rectal mucous membrane. When the cysts in the tongue are numerous they may cause partial paralysis, and as a result,difficult prehension o.f food. If the cysts are formed in the brain or spinal cord various nervous diso
![. Salmon-fishing in Canada, by a resident;. Salmon-fishing. 229 CHAP. XII. "TRINITY. — PENTECOST. MARGARET. is to with INGE we commenced jot- ting down our reminis- cences in the foregoing pages, we have had fre- quent occasion to make mention of the Hudson's Bay Company, and we think it is not improbable that our readers might wish to know something more of that honourable body than be found in those allusions, and therefore furnish them the following sketch.*. * In the year 1669, a company was formed in London, under the direc- tion of Prince Eupert, for the purpose of prosecuting the f Stock Photo](https://c8.alamy.com/comp/RDHT4B/salmon-fishing-in-canada-by-a-resident-salmon-fishing-229-chap-xii-quottrinity-pentecost-margaret-is-to-with-inge-we-commenced-jot-ting-down-our-reminis-cences-in-the-foregoing-pages-we-have-had-fre-quent-occasion-to-make-mention-of-the-hudsons-bay-company-and-we-think-it-is-not-improbable-that-our-readers-might-wish-to-know-something-more-of-that-honourable-body-than-be-found-in-those-allusions-and-therefore-furnish-them-the-following-sketch-in-the-year-1669-a-company-was-formed-in-london-under-the-direc-tion-of-prince-eupert-for-the-purpose-of-prosecuting-the-f-RDHT4B.jpg ". Salmon-fishing in Canada, by a resident;. Salmon-fishing. 229 CHAP. XII. "TRINITY. — PENTECOST. MARGARET. is to with INGE we commenced jot- ting down our reminis- cences in the foregoing pages, we have had fre- quent occasion to make mention of the Hudson's Bay Company, and we think it is not improbable that our readers might wish to know something more of that honourable body than be found in those allusions, and therefore furnish them the following sketch.*. * In the year 1669, a company was formed in London, under the direc- tion of Prince Eupert, for the purpose of prosecuting the f Stock Photo")
RMRDHT4B–. Salmon-fishing in Canada, by a resident;. Salmon-fishing. 229 CHAP. XII. "TRINITY. — PENTECOST. MARGARET. is to with INGE we commenced jot- ting down our reminis- cences in the foregoing pages, we have had fre- quent occasion to make mention of the Hudson's Bay Company, and we think it is not improbable that our readers might wish to know something more of that honourable body than be found in those allusions, and therefore furnish them the following sketch.*. * In the year 1669, a company was formed in London, under the direc- tion of Prince Eupert, for the purpose of prosecuting the f
![. Animal Life and the World of Nature; A magazine of Natural History. . THE LIFE = HISTORY OF THE LIME HAWK=MOTH. Illustrated with Photographs taken from Life hy Fred Enock, f.l.s., etc. THERE is no doubt that to most entomologists the prime favourites among the British Lepidoptera are the "Hawk" Moths ("Sphinges"). Apart from being of large size, their elegant and well-proportioned wings, their long tongues and huge eyes, containing tens of thousands of facets, and last, but not least, their wonderfully-formed and complex antennae, all help to make the unexpected sight of Stock Photo](https://c8.alamy.com/comp/RN42JJ/animal-life-and-the-world-of-nature-a-magazine-of-natural-history-the-life-=-history-of-the-lime-hawk=moth-illustrated-with-photographs-taken-from-life-hy-fred-enock-fls-etc-there-is-no-doubt-that-to-most-entomologists-the-prime-favourites-among-the-british-lepidoptera-are-the-quothawkquot-moths-quotsphingesquot-apart-from-being-of-large-size-their-elegant-and-well-proportioned-wings-their-long-tongues-and-huge-eyes-containing-tens-of-thousands-of-facets-and-last-but-not-least-their-wonderfully-formed-and-complex-antennae-all-help-to-make-the-unexpected-sight-of-RN42JJ.jpg ". Animal Life and the World of Nature; A magazine of Natural History. . THE LIFE = HISTORY OF THE LIME HAWK=MOTH. Illustrated with Photographs taken from Life hy Fred Enock, f.l.s., etc. THERE is no doubt that to most entomologists the prime favourites among the British Lepidoptera are the "Hawk" Moths ("Sphinges"). Apart from being of large size, their elegant and well-proportioned wings, their long tongues and huge eyes, containing tens of thousands of facets, and last, but not least, their wonderfully-formed and complex antennae, all help to make the unexpected sight of Stock Photo")
RMRN42JJ–. Animal Life and the World of Nature; A magazine of Natural History. . THE LIFE = HISTORY OF THE LIME HAWK=MOTH. Illustrated with Photographs taken from Life hy Fred Enock, f.l.s., etc. THERE is no doubt that to most entomologists the prime favourites among the British Lepidoptera are the "Hawk" Moths ("Sphinges"). Apart from being of large size, their elegant and well-proportioned wings, their long tongues and huge eyes, containing tens of thousands of facets, and last, but not least, their wonderfully-formed and complex antennae, all help to make the unexpected sight of
RMRDG3H3–. The natural history of plants. Botany. Fig. 17. Flower (f). Fig. IS. Lonn;. sect flower. of anthers are bilobed at the summit, with the pore of dehiscence situated at the bottom of the hollow separating the two lobes. Phyllagathis has also a capitate inflorescence (in reality formed of uniparous cymes), sur- rounded by an involucre generally formed of large bracts. The flowers, 3, 4-merous and diploste- monous, have a cam- panulate receptacle and sepals ciliate at the mar- gin, sometimes with al- ternate rigid hairs. The cells of the pointed elon- gate and sinuous anthers separate from each
RMRD2B7R–. Cytology, with special reference to the metazoan nucleus. Cells. Fig. 15. Diagram of the principal stages of meiosis by parasyndesis. Two pairs of homologous chromosomes are shown, the members of one pair being stippled, and those of the other cross-striped. A, pre-meiotic prophase, showing the four separate chromosomes ; B, leptotene ; C, pachytene ; D, diplotene stages; E, diakinesis, showing the evolution of the definitive bivalents ; F, meiotic metaphase ; G, metaphase of second division of the meiotic phase in the secondary spermatocyte formed from the upper daughter nucleus derived fro
![. The illustrated natural history [microform]. Natural history; Sciences naturelles. 12 NATURAL HISTORY. FamUy II. Simiadoe.—(Lat. Simla, an ape—Ape kind.) Troqlodytes.—(Gr. rpdyXv, a lio^f i '"'"i to creep.). Niger (Lat. black), the Chimpansee. The section Quadnimana includes the apes, bahoons, and monkeys. The name of Quadruman;! is given to these animals because, in addition to two hands like those of man, their feet are also formed like hands, and are capable of gi-asping the branches among which most monkeys pass their lives. Apes are placed at the head of the Quadrumana because Stock Photo](https://c8.alamy.com/comp/RERT40/the-illustrated-natural-history-microform-natural-history-sciences-naturelles-12-natural-history-famuy-ii-simiadoelat-simla-an-apeape-kind-troqlodytesgr-rpdyxv-a-liof-i-quotquoti-to-creep-niger-lat-black-the-chimpansee-the-section-quadnimana-includes-the-apes-bahoons-and-monkeys-the-name-of-quadruman!-is-given-to-these-animals-because-in-addition-to-two-hands-like-those-of-man-their-feet-are-also-formed-like-hands-and-are-capable-of-gi-asping-the-branches-among-which-most-monkeys-pass-their-lives-apes-are-placed-at-the-head-of-the-quadrumana-because-RERT40.jpg ". The illustrated natural history [microform]. Natural history; Sciences naturelles. 12 NATURAL HISTORY. FamUy II. Simiadoe.—(Lat. Simla, an ape—Ape kind.) Troqlodytes.—(Gr. rpdyXv, a lio^f i '"'"i to creep.). Niger (Lat. black), the Chimpansee. The section Quadnimana includes the apes, bahoons, and monkeys. The name of Quadruman;! is given to these animals because, in addition to two hands like those of man, their feet are also formed like hands, and are capable of gi-asping the branches among which most monkeys pass their lives. Apes are placed at the head of the Quadrumana because Stock Photo")
RMRERT40–. The illustrated natural history [microform]. Natural history; Sciences naturelles. 12 NATURAL HISTORY. FamUy II. Simiadoe.—(Lat. Simla, an ape—Ape kind.) Troqlodytes.—(Gr. rpdyXv, a lio^f i '"'"i to creep.). Niger (Lat. black), the Chimpansee. The section Quadnimana includes the apes, bahoons, and monkeys. The name of Quadruman;! is given to these animals because, in addition to two hands like those of man, their feet are also formed like hands, and are capable of gi-asping the branches among which most monkeys pass their lives. Apes are placed at the head of the Quadrumana because
RMRH8XJ4–. Botany for secondary schools; a guide to the knowledge of the vegetation of the neighborhood. Plants. FUNGI 189 t° accomplished by means of curious thick-walled resting-spores or zygo- spores. The zygospores are formed on the mycelium buried within the substance on which the plant, grows. They originate as follows The threads of two sexually different plants that lie near together send out short branches, which grow toward each other and finally meet. (Fig. 347.) The walls at the ends, a, then disappear, allowing the contents to flow together. At the same time, however, two other walls are f
![. Travels through the interior parts of North-America in the years 1766, 1767 and 1768 [microform]. Indians of North America; Biology; Zoology; Indiens; Biologie; Zoologie. 1 ^ f "i ] ndvantaj^cs thnt would arilc to tlicm fmrrt trafficking entirely witli the Canadian traders. fii this they too well fucceeded, and tVom this, douhtlefs, did the diflatii'-* faiJilion the AfiiniptMls and Killilliiioes ex- prelVed to nic, partly proceed. lUiC another rciilon augmented it; and this was the length of their journey to the Hudfon's Bay factories, wiiich, they in- formed me, took them up three mont Stock Photo](https://c8.alamy.com/comp/RJ0GFK/travels-through-the-interior-parts-of-north-america-in-the-years-1766-1767-and-1768-microform-indians-of-north-america-biology-zoology-indiens-biologie-zoologie-1-f-quoti-ndvantajcs-thnt-would-arilc-to-tlicm-fmrrt-trafficking-entirely-witli-the-canadian-traders-fii-this-they-too-well-fucceeded-and-tvom-this-douhtlefs-did-the-diflatii-faijilion-the-afiiniptmls-and-killilliiioes-ex-prelved-to-nic-partly-proceed-luic-another-rciilon-augmented-it-and-this-was-the-length-of-their-journey-to-the-hudfons-bay-factories-wiiich-they-in-formed-me-took-them-up-three-mont-RJ0GFK.jpg ". Travels through the interior parts of North-America in the years 1766, 1767 and 1768 [microform]. Indians of North America; Biology; Zoology; Indiens; Biologie; Zoologie. 1 ^ f "i ] ndvantaj^cs thnt would arilc to tlicm fmrrt trafficking entirely witli the Canadian traders. fii this they too well fucceeded, and tVom this, douhtlefs, did the diflatii'-* faiJilion the AfiiniptMls and Killilliiioes ex- prelVed to nic, partly proceed. lUiC another rciilon augmented it; and this was the length of their journey to the Hudfon's Bay factories, wiiich, they in- formed me, took them up three mont Stock Photo")
RMRJ0GFK–. Travels through the interior parts of North-America in the years 1766, 1767 and 1768 [microform]. Indians of North America; Biology; Zoology; Indiens; Biologie; Zoologie. 1 ^ f "i ] ndvantaj^cs thnt would arilc to tlicm fmrrt trafficking entirely witli the Canadian traders. fii this they too well fucceeded, and tVom this, douhtlefs, did the diflatii'-* faiJilion the AfiiniptMls and Killilliiioes ex- prelVed to nic, partly proceed. lUiC another rciilon augmented it; and this was the length of their journey to the Hudfon's Bay factories, wiiich, they in- formed me, took them up three mont
RMRDM9R5–. Ways of the six-footed. Insects. 134 WAYS OF THE SIX-FOOTED Most skilfully he makes his snare. It is formed like a dip-net and fastened with silk to a frame of leaves or pebbles, so that its distended mouth is directed up-stream. Near the frame it consists of fragments of vegetation woven into a silken tapestry and is finished at the end with a bag Fig. 44. A Seine and the Fish- ^f coarse, even mesh. The erman's Hut. » , . , . regularity of this bit of netting is beautiful to behold, and its use shows the cleverness of the builder. This large mesh allows the water to flow through freely, and
RMRE5YYJ–. Creation by evolution; a consensus of present-day knowledge as set forth by leading authorities in non-technical language that all may understand. Evolution. CREATION BY EVOLUTION been formed (Fig. 3, B to F.). These five sets are like different branches of a tree, all coming from one trunk. They are separated by many generations from the original parent A. During the passage of these generations the different branches have become permanently diverse. Each differs from the other hereditarily. Even when all are living. Please note that these images are extracted from scanned page images that
RMRN84D2–. Anatomischer Anzeiger. Anatomy, Comparative; Anatomy, Comparative. 531 A. p. F.B. washed in alcohol and photographed (see Figs. 1—3) after which they were stained and mounted as transparent objects and again examined. Description of the Specimens. Specimen A (see Fig. 1). This was a syncephalic monster, lying transversely to the long axis of the egg, on a blastoderm limited by a single sinus terminalis, and had been incubated for about 42 hours. The two posterior bodies, which diverged at an angle of about 90° were very similar each having a well formed neural canal, a notochord, and a serie
![. How plants grow [microform] : a simple introduction to structural botany : with a popular flora, or an arrangement and description of common plants, both wild and cultivated : illustrated by 500 wood engravings. Botany; Botanique. w 8 HOW PLANTS GROW, I I "^ 16. The Pislill are the bodies in which the seeds are formed. They be- long in the centre of the f.ower. The Morning-GIory has only one pistil: this is shown, enlarged, in Fig. 8. The Rose and the Buttercup have a great many. A pistil has three parts. At the bottom is the Ovary, which become^ the seed-vesseL This is prolonged upward Stock Photo](https://c8.alamy.com/comp/RJ1DFR/how-plants-grow-microform-a-simple-introduction-to-structural-botany-with-a-popular-flora-or-an-arrangement-and-description-of-common-plants-both-wild-and-cultivated-illustrated-by-500-wood-engravings-botany-botanique-w-8-how-plants-grow-i-i-quot-16-the-pislill-are-the-bodies-in-which-the-seeds-are-formed-they-be-long-in-the-centre-of-the-fower-the-morning-giory-has-only-one-pistil-this-is-shown-enlarged-in-fig-8-the-rose-and-the-buttercup-have-a-great-many-a-pistil-has-three-parts-at-the-bottom-is-the-ovary-which-become-the-seed-vessel-this-is-prolonged-upward-RJ1DFR.jpg ". How plants grow [microform] : a simple introduction to structural botany : with a popular flora, or an arrangement and description of common plants, both wild and cultivated : illustrated by 500 wood engravings. Botany; Botanique. w 8 HOW PLANTS GROW, I I "^ 16. The Pislill are the bodies in which the seeds are formed. They be- long in the centre of the f.ower. The Morning-GIory has only one pistil: this is shown, enlarged, in Fig. 8. The Rose and the Buttercup have a great many. A pistil has three parts. At the bottom is the Ovary, which become^ the seed-vesseL This is prolonged upward Stock Photo")
RMRJ1DFR–. How plants grow [microform] : a simple introduction to structural botany : with a popular flora, or an arrangement and description of common plants, both wild and cultivated : illustrated by 500 wood engravings. Botany; Botanique. w 8 HOW PLANTS GROW, I I "^ 16. The Pislill are the bodies in which the seeds are formed. They be- long in the centre of the f.ower. The Morning-GIory has only one pistil: this is shown, enlarged, in Fig. 8. The Rose and the Buttercup have a great many. A pistil has three parts. At the bottom is the Ovary, which become^ the seed-vesseL This is prolonged upward
RMRDGAGC–. Elements of the comparative anatomy of vertebrates. Anatomy, Comparative. Fig. 151.âNekvb Elevation of a Urodelb. (Semidiagrammatic.) I, cells of the epidermis, througli which the neuro-epithelium, b, h, can be seen ; c, the terminal hairs of the latter (the peripheral cells are not repre- sented) ; if, hj'aline tube, formed as a secretion; If, the nerve-fibres passing to and surrounding the sensory cells.. Fig. 152. (1- -Sexsoby Canals of Chimaira monstrosa. (After F. J. Cole.; innervation is indicated by the different kinds of shading. The Supra-orbital canal (innervated by superficial oph
![. Botany for high schools and colleges. Botany. F ^ B thin partition, thouglit that the lenticular cavity was formed by the separation of the walls of the two contiguous cells at that place, and con- A , Bequently that tliey were " ' intercellular. This in- terpretation is still given in some hooks.* 31. â While the bordered pits of the ConiferEe are neTsr crowded together, in the cells of some plants they are so numerous as to lie closely side by side (Fig. 17). In such case the first thick- ening of the wall pre- sents itself as a net- work of ridges en- closing elliptical thin places. Stock Photo](https://c8.alamy.com/comp/RDWAXA/botany-for-high-schools-and-colleges-botany-f-b-thin-partition-thouglit-that-the-lenticular-cavity-was-formed-by-the-separation-of-the-walls-of-the-two-contiguous-cells-at-that-place-and-con-a-bequently-that-tliey-were-quot-intercellular-this-in-terpretation-is-still-given-in-some-hooks-31-while-the-bordered-pits-of-the-coniferee-are-netsr-crowded-together-in-the-cells-of-some-plants-they-are-so-numerous-as-to-lie-closely-side-by-side-fig-17-in-such-case-the-first-thick-ening-of-the-wall-pre-sents-itself-as-a-net-work-of-ridges-en-closing-elliptical-thin-places-RDWAXA.jpg ". Botany for high schools and colleges. Botany. F ^ B thin partition, thouglit that the lenticular cavity was formed by the separation of the walls of the two contiguous cells at that place, and con- A , Bequently that tliey were " ' intercellular. This in- terpretation is still given in some hooks.* 31. â While the bordered pits of the ConiferEe are neTsr crowded together, in the cells of some plants they are so numerous as to lie closely side by side (Fig. 17). In such case the first thick- ening of the wall pre- sents itself as a net- work of ridges en- closing elliptical thin places. Stock Photo")
RMRDWAXA–. Botany for high schools and colleges. Botany. F ^ B thin partition, thouglit that the lenticular cavity was formed by the separation of the walls of the two contiguous cells at that place, and con- A , Bequently that tliey were " ' intercellular. This in- terpretation is still given in some hooks.* 31. â While the bordered pits of the ConiferEe are neTsr crowded together, in the cells of some plants they are so numerous as to lie closely side by side (Fig. 17). In such case the first thick- ening of the wall pre- sents itself as a net- work of ridges en- closing elliptical thin places.
![. Narrative of discovery and adventure in the polar seas and regions [microform] : with illustrations of their climate, geology, and natural history; with an account of the whale-fishery. Natural history; Sciences naturelles. ! f 1/ w l 422 ARCTIC GEOLOGY. limestones connected with the new trap-rocks in Baffin's Bay. 2. That the Neptunian, primitive, and transition rocks, now forming islands of various magnitudes, were in all probability at one time connected toge- ther, and formed a more continuous mass of land than at present; and that on these formations were deposited the secondary limest Stock Photo](https://c8.alamy.com/comp/RJ0DWK/narrative-of-discovery-and-adventure-in-the-polar-seas-and-regions-microform-with-illustrations-of-their-climate-geology-and-natural-history-with-an-account-of-the-whale-fishery-natural-history-sciences-naturelles-!-f-1-w-l-422-arctic-geology-limestones-connected-with-the-new-trap-rocks-in-baffins-bay-2-that-the-neptunian-primitive-and-transition-rocks-now-forming-islands-of-various-magnitudes-were-in-all-probability-at-one-time-connected-toge-ther-and-formed-a-more-continuous-mass-of-land-than-at-present-and-that-on-these-formations-were-deposited-the-secondary-limest-RJ0DWK.jpg ". Narrative of discovery and adventure in the polar seas and regions [microform] : with illustrations of their climate, geology, and natural history; with an account of the whale-fishery. Natural history; Sciences naturelles. ! f 1/ w l 422 ARCTIC GEOLOGY. limestones connected with the new trap-rocks in Baffin's Bay. 2. That the Neptunian, primitive, and transition rocks, now forming islands of various magnitudes, were in all probability at one time connected toge- ther, and formed a more continuous mass of land than at present; and that on these formations were deposited the secondary limest Stock Photo")
RMRJ0DWK–. Narrative of discovery and adventure in the polar seas and regions [microform] : with illustrations of their climate, geology, and natural history; with an account of the whale-fishery. Natural history; Sciences naturelles. ! f 1/ w l 422 ARCTIC GEOLOGY. limestones connected with the new trap-rocks in Baffin's Bay. 2. That the Neptunian, primitive, and transition rocks, now forming islands of various magnitudes, were in all probability at one time connected toge- ther, and formed a more continuous mass of land than at present; and that on these formations were deposited the secondary limest
RMRE7YEM–. The Earth beneath the sea : History. Ocean bottom; Marine geophysics. e f g Fig. 1. Coccolithophorids and related forms, a-c, discoasters; d, pentalith of Braarvdo- sphaera; e, f, rhabdoliths; g, h, coccoliths. samples, and other small calcareous bodies which are inferred to have been formed by rather similar organisms. Quantitatively the most important of these microfossils of uncertain affinities are the discoasters (Fig. la-c)—usually flat, stellate bodies of approximately the same size as coccoliths, formed by a group of organisms which are believed to have become extinct at about the en
RMREKAN7–. The Civil engineer and architect's journal, scientific and railway gazette. Architecture; Civil engineering; Science. 124 THE CIVIL ENGINEER AND ARCHITECT'S JOURNAL. [April,. iron. If the circuit is closed and broken rapidly, a succession of marks or dots will be printed on the ribband ; but if closed for a longer time, and then brckjn, the marks are longer; so that long spaces, and short spaces, dots, long and short lines, are formed at pleasure. An arrangement of these marks constitutes the Telegraphic Alphabet. Monday, IMarch 9. John Adie, Esq., F.R.S.E., V.P., in the Chair. The following
![. Biology; the story of living things. . proximal diistal tubule. .glomerulus'] sift descending limt A i ascending limb ,^ f Hanles loop papillary diccts :r!:^papUla Diagram of the human excretory system. blocCdCar- . wr-athra How do urea, water, and inorganic salts reach the pelvis i* The inner margin of the medullary substance forms renal pyramids the tips of which are projections, or papillae, that lie in closely invest- ing cuplike depressions of the pelvis, called calyces. The tip of each papilla is dotted with the openings of the collecting ducts, which in turn are formed from the union Stock Photo](https://c8.alamy.com/comp/RHJTX6/biology-the-story-of-living-things-proximal-diistal-tubule-glomerulus-sift-descending-limt-a-i-ascending-limb-f-hanles-loop-papillary-diccts-r!papula-diagram-of-the-human-excretory-system-bloccdcar-wr-athra-how-do-urea-water-and-inorganic-salts-reach-the-pelvis-i-the-inner-margin-of-the-medullary-substance-forms-renal-pyramids-the-tips-of-which-are-projections-or-papillae-that-lie-in-closely-invest-ing-cuplike-depressions-of-the-pelvis-called-calyces-the-tip-of-each-papilla-is-dotted-with-the-openings-of-the-collecting-ducts-which-in-turn-are-formed-from-the-union-RHJTX6.jpg ". Biology; the story of living things. . proximal diistal tubule. .glomerulus'] sift descending limt A i ascending limb ,^ f Hanles loop papillary diccts :r!:^papUla Diagram of the human excretory system. blocCdCar- . wr-athra How do urea, water, and inorganic salts reach the pelvis i* The inner margin of the medullary substance forms renal pyramids the tips of which are projections, or papillae, that lie in closely invest- ing cuplike depressions of the pelvis, called calyces. The tip of each papilla is dotted with the openings of the collecting ducts, which in turn are formed from the union Stock Photo")
RMRHJTX6–. Biology; the story of living things. . proximal diistal tubule. .glomerulus'] sift descending limt A i ascending limb ,^ f Hanles loop papillary diccts :r!:^papUla Diagram of the human excretory system. blocCdCar- . wr-athra How do urea, water, and inorganic salts reach the pelvis i* The inner margin of the medullary substance forms renal pyramids the tips of which are projections, or papillae, that lie in closely invest- ing cuplike depressions of the pelvis, called calyces. The tip of each papilla is dotted with the openings of the collecting ducts, which in turn are formed from the union
![. The anatomy of the domestic animals . Veterinary anatomy. THE PEEICABDIXJM AND HEART 743 wUi, ^^ °'l^'' ?^ contact of the pericardium with the chest wall is chiefly ventral, and is best seen muscles) TheT,l^'^,'tpH?f'k ^", ^^is position (after removal of the mtercostal and rectus thorac^ muscles) the aiea is seen to be a.lmost triangular. The anterior border of the triangle (formed by Xe"^ e^d no'nf ttfthfw ^"^^ f ^^.^"^ "^^^ fourth costal cartilage and extends across the median plane endmg at the third interchondral space near the costo-chondral junction. The right Stock Photo](https://c8.alamy.com/comp/RDXP3J/the-anatomy-of-the-domestic-animals-veterinary-anatomy-the-peeicabdixjm-and-heart-743-wui-l-contact-of-the-pericardium-with-the-chest-wall-is-chiefly-ventral-and-is-best-seen-muscles-thetltphfk-quot-is-position-after-removal-of-the-mtercostal-and-rectus-thorac-muscles-the-aiea-is-seen-to-be-almost-triangular-the-anterior-border-of-the-triangle-formed-by-xequot-ed-nonf-ttfthfw-quot-f-quot-quot-fourth-costal-cartilage-and-extends-across-the-median-plane-endmg-at-the-third-interchondral-space-near-the-costo-chondral-junction-the-right-RDXP3J.jpg ". The anatomy of the domestic animals . Veterinary anatomy. THE PEEICABDIXJM AND HEART 743 wUi, ^^ °'l^'' ?^ contact of the pericardium with the chest wall is chiefly ventral, and is best seen muscles) TheT,l^'^,'tpH?f'k ^", ^^is position (after removal of the mtercostal and rectus thorac^ muscles) the aiea is seen to be a.lmost triangular. The anterior border of the triangle (formed by Xe"^ e^d no'nf ttfthfw ^"^^ f ^^.^"^ "^^^ fourth costal cartilage and extends across the median plane endmg at the third interchondral space near the costo-chondral junction. The right Stock Photo")
RMRDXP3J–. The anatomy of the domestic animals . Veterinary anatomy. THE PEEICABDIXJM AND HEART 743 wUi, ^^ °'l^'' ?^ contact of the pericardium with the chest wall is chiefly ventral, and is best seen muscles) TheT,l^'^,'tpH?f'k ^", ^^is position (after removal of the mtercostal and rectus thorac^ muscles) the aiea is seen to be a.lmost triangular. The anterior border of the triangle (formed by Xe"^ e^d no'nf ttfthfw ^"^^ f ^^.^"^ "^^^ fourth costal cartilage and extends across the median plane endmg at the third interchondral space near the costo-chondral junction. The right
![. A contribution to American thalassography : Three cruises of the United States Coast and geodetic survey steamer "Blake", in the gulf of Mexico, in the Caribbean sea, and along the Atlantic coast of the United States, from 1877 to 1880. Blake (Steamer); Marine animals -- Atlantic Ocean; Marine sediments. Fig. 522. — Aphrocallistes Bocagei. f. which has been dredged by the " Blake " in depths of from 164 to 400 fathoms. It is also found in the eastern basin of the North Atlantic. The network appears to be formed by the co- alescence of stellate spicules. These sponges are Stock Photo](https://c8.alamy.com/comp/RE9B5Y/a-contribution-to-american-thalassography-three-cruises-of-the-united-states-coast-and-geodetic-survey-steamer-quotblakequot-in-the-gulf-of-mexico-in-the-caribbean-sea-and-along-the-atlantic-coast-of-the-united-states-from-1877-to-1880-blake-steamer-marine-animals-atlantic-ocean-marine-sediments-fig-522-aphrocallistes-bocagei-f-which-has-been-dredged-by-the-quot-blake-quot-in-depths-of-from-164-to-400-fathoms-it-is-also-found-in-the-eastern-basin-of-the-north-atlantic-the-network-appears-to-be-formed-by-the-co-alescence-of-stellate-spicules-these-sponges-are-RE9B5Y.jpg ". A contribution to American thalassography : Three cruises of the United States Coast and geodetic survey steamer "Blake", in the gulf of Mexico, in the Caribbean sea, and along the Atlantic coast of the United States, from 1877 to 1880. Blake (Steamer); Marine animals -- Atlantic Ocean; Marine sediments. Fig. 522. — Aphrocallistes Bocagei. f. which has been dredged by the " Blake " in depths of from 164 to 400 fathoms. It is also found in the eastern basin of the North Atlantic. The network appears to be formed by the co- alescence of stellate spicules. These sponges are Stock Photo")
RMRE9B5Y–. A contribution to American thalassography : Three cruises of the United States Coast and geodetic survey steamer "Blake", in the gulf of Mexico, in the Caribbean sea, and along the Atlantic coast of the United States, from 1877 to 1880. Blake (Steamer); Marine animals -- Atlantic Ocean; Marine sediments. Fig. 522. — Aphrocallistes Bocagei. f. which has been dredged by the " Blake " in depths of from 164 to 400 fathoms. It is also found in the eastern basin of the North Atlantic. The network appears to be formed by the co- alescence of stellate spicules. These sponges are
RMRG5K8J–. Calcified tissues; proceedings. Bone; Collagen; Calcification. L. F. Belanger, T. Semba, S. Tolnai, D. H. Copp, L. Krook, C. Gries The result should be a progressive loss of bone manifested by an enlargement of the osteonic canal and a gradual loss of bone substance. Alpharadiographs of demineralized sections of normal bone have revealed that the areas where osteolysis is occurring are characterized by the presence of enlarged. Fig. 5 and oftentimes confluent lacunae surrounded by low-density matrix (Belanger et al., 1963 b). Newly-formed portions of the tissue, at the border of osteonic can
RMRD2EAC–. Dansk botanisk arkiv. Plants; Plants -- Denmark. F. Børgesen: Rhodophyceæ of the Danish W. Indies. 279 The antheridial stands (Fig. 279) are formed by the first side- branch of the trichoblast. They are rather thick, subcylindrical, with a nearly spherical, thick-walled, sterile, apical cell; sometimes two are found. The fertile part is up to 200 « long and 60« broad. The fertile trichoblasts are found in the summit of the filaments. The antheridial plants are somewhat more slender than those with. Fig. 278. Polysiphonia ferulacea Suhr, J. Ag. a, summit of a filament; of some of the trichobl
RMRDFC9T–. The structure and development of mosses and ferns (Archegoniatae). Plant morphology; Mosses; Ferns. MARATTIALES 287. --'Z- â F. older parts of the root to the segments of the apical cell is impossible to determine, and evidently is not always exactly the same. The root-cap is derived mainly from the outer segments of the apical cell, but also to some extent from the outer cells of the lateral segments; and the central cylinder, where the base of the apical cell is truncate, is -^ St A- formed mainly from the basal segments, but in part as well from the inner cells of the lateral segments. T
RMRD2XRH–. Cytology, with special reference to the metazoan nucleus. Cells. 78 CYTOLOGY CHAP. of the early cleavage stages are double, each portion being the direct descendant of one of the gamete nuclei. Each constituent of such a double nucleus is called a gonomere. In prophase each gonomere forms its chromosomes separately from the other. The two groups of chromosomes thus formed are usually indistinguishable from one another after the break-down of the nuclear membrane, but in telophase they become recognizable again owing to the fact that the group of chromosomes derived from each gonomere again f
RMRE04JA–. A text-book of comparative physiology for students and practitioners of comparative (veterinary) medicine. Physiology, Comparative. 100 COMPARATIVE PHYSIOLOGY. m.bT au.p. transverse division of the columns of mesoblast that formed the vertebral plates. Before the permanent vertebrae are formed, a reunion of the original protovertebrse takes place as one cartilaginous pillar, followed by a new segmen- f:-^- tation midway between the original divisions. It is thus seen that a large number of structures either appear or are clearly outlined during the first day of incubation : the primitive str
![. Genetics in relation to agriculture. Livestock; Heredity; Variation (Biology); Plant breeding. Fig. 28.—Diagram of mitosis in a species having four chromosomes in its cells. A, The "resting" cell. B, Formation of the spireme-thread. C, Longitudinal division of the spirome-thread and transverse segmentation into four chromosomes. D, Separation of the daughter chromosomes formed by longitudional splitting of spireme-thread. E, Beginnings of nuclear reconstruction and division of the cell body. F, Cell division complete and daughter nuclei in the "resting" stage. organized i Stock Photo](https://c8.alamy.com/comp/RDYWF4/genetics-in-relation-to-agriculture-livestock-heredity-variation-biology-plant-breeding-fig-28diagram-of-mitosis-in-a-species-having-four-chromosomes-in-its-cells-a-the-quotrestingquot-cell-b-formation-of-the-spireme-thread-c-longitudinal-division-of-the-spirome-thread-and-transverse-segmentation-into-four-chromosomes-d-separation-of-the-daughter-chromosomes-formed-by-longitudional-splitting-of-spireme-thread-e-beginnings-of-nuclear-reconstruction-and-division-of-the-cell-body-f-cell-division-complete-and-daughter-nuclei-in-the-quotrestingquot-stage-organized-i-RDYWF4.jpg ". Genetics in relation to agriculture. Livestock; Heredity; Variation (Biology); Plant breeding. Fig. 28.—Diagram of mitosis in a species having four chromosomes in its cells. A, The "resting" cell. B, Formation of the spireme-thread. C, Longitudinal division of the spirome-thread and transverse segmentation into four chromosomes. D, Separation of the daughter chromosomes formed by longitudional splitting of spireme-thread. E, Beginnings of nuclear reconstruction and division of the cell body. F, Cell division complete and daughter nuclei in the "resting" stage. organized i Stock Photo")
RMRDYWF4–. Genetics in relation to agriculture. Livestock; Heredity; Variation (Biology); Plant breeding. Fig. 28.—Diagram of mitosis in a species having four chromosomes in its cells. A, The "resting" cell. B, Formation of the spireme-thread. C, Longitudinal division of the spirome-thread and transverse segmentation into four chromosomes. D, Separation of the daughter chromosomes formed by longitudional splitting of spireme-thread. E, Beginnings of nuclear reconstruction and division of the cell body. F, Cell division complete and daughter nuclei in the "resting" stage. organized i
![. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology; Zoology. 172 THREE CRUISES OF THE " BLAKE. by him from a depth of 1,075 fathoms off the Bermudas. It must have attained at least a foot in height. Another most common and at the same time most exquisite type of Hexactinellidse is Aphrocallistes Bocagei (Fig. 522),. Fig. 522. — Aphrocallistes Bocagei. f. which has been dredged by the " Blake " in depths of from 164 to 400 fathoms. It is also found in the eastern basin of the North Atlantic. The network appears to be formed by the co- alescence of stellat Stock Photo](https://c8.alamy.com/comp/RGFT5T/bulletin-of-the-museum-of-comparative-zoology-at-harvard-college-zoology-zoology-172-three-cruises-of-the-quot-blake-by-him-from-a-depth-of-1075-fathoms-off-the-bermudas-it-must-have-attained-at-least-a-foot-in-height-another-most-common-and-at-the-same-time-most-exquisite-type-of-hexactinellidse-is-aphrocallistes-bocagei-fig-522-fig-522-aphrocallistes-bocagei-f-which-has-been-dredged-by-the-quot-blake-quot-in-depths-of-from-164-to-400-fathoms-it-is-also-found-in-the-eastern-basin-of-the-north-atlantic-the-network-appears-to-be-formed-by-the-co-alescence-of-stellat-RGFT5T.jpg ". Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology; Zoology. 172 THREE CRUISES OF THE " BLAKE. by him from a depth of 1,075 fathoms off the Bermudas. It must have attained at least a foot in height. Another most common and at the same time most exquisite type of Hexactinellidse is Aphrocallistes Bocagei (Fig. 522),. Fig. 522. — Aphrocallistes Bocagei. f. which has been dredged by the " Blake " in depths of from 164 to 400 fathoms. It is also found in the eastern basin of the North Atlantic. The network appears to be formed by the co- alescence of stellat Stock Photo")
RMRGFT5T–. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology; Zoology. 172 THREE CRUISES OF THE " BLAKE. by him from a depth of 1,075 fathoms off the Bermudas. It must have attained at least a foot in height. Another most common and at the same time most exquisite type of Hexactinellidse is Aphrocallistes Bocagei (Fig. 522),. Fig. 522. — Aphrocallistes Bocagei. f. which has been dredged by the " Blake " in depths of from 164 to 400 fathoms. It is also found in the eastern basin of the North Atlantic. The network appears to be formed by the co- alescence of stellat
RMRD2ED2–. Dansk botanisk arkiv. Plants; Plants -- Denmark. F. Børgesen: Rhodophyceæ of the Danish W. Indies. 259. cimens found here are small, seldom more than 5 cm. high (Fig. 251). Plants with tetrasporangia as well as with antheridia and cystocarps are found. The tetrasporangia (Fig. 252) are formed in the ramuli, mostly in their upper ends, often, however, in ^U of their length. The lowest sporangia are the oldest ones. Often, too, the summit of the branch from which the ramuli issue, is sporangiferous. The dia- meter of the tetrasporangia is about 110 ju. The antheridial stands are placed in th
RMRG2XR9–. The Canadian field-naturalist. . Photograph by F. Johansen Ponds at Billings' Bridge, Ontario, May, 1921 of the pool, and quickly hiding themselves among the dead leaves at the bottom when I tried to catch them. These must have been the very last fairy-shrimps still alive this year, because in spite of careful looking only 2-3 specimens were seen in this pool. They had not formerly been observed there; and the pool is apparently formed by melting water from the surrounding drier swamp, dammed up by the building of the new driveway. This is the latest date in the spring upon which E. gelidus
RMRDE71G–. Our ferns in their haunts; a guide to all the native species. Ferns. 3o8 KEY TO THE GENERA.. Sori near the margins. Indusia formed by the reflexed edges of the pinnules. c. Sporangia in a continuous nit fronds large, lernate; indusium narrow. Bracken. Pteris. 69 0^=== r.-^. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Clute, Willard Nelson, b. 1869. New York, F. A. Stokes Co
RMRDPNRD–. My garden, its plan and culture together with a general description of its geology, botany, and natural history. Gardening. Fig. 15S.—Kohl Rabi, diam.. Fig. 157. —Brussels SprouCSj dlam. Fig. 159.—Cauliflower, J diam. Kohl Rabi {Brassica Carlo Rapes caudo, fig. 158) is sometimes grown at my garden for the cattle. Occasionally we have cooked it by way of experiment, but it is, at best, an indifferent vegetal. The seed is sown in February and planted out in May, when by autumn the bulbs are fairly formed. It is particularly adapted for dry summers, as the hotter and drier the summer, the f
Search Results for F formed Stock Photos and Images (3,866)
Page 29 of 39