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Parasitic diseases Stock Photos and Images
RMRN4NYH–. Animal parasites and human disease. Insect Vectors; Parasites; Parasitic Diseases; Medical parasitology; Insects as carriers of disease. SCARLET FEVER Epithelial cells of skin showing various stages in development of Mallory bodies, Cyclasterion scarlatina. Radiate form shown in middle figure. (After Mallory.) ?V.b. TRACHOMA Epithelial cell of conjunctiva showing Prowazek bodies. (After Halberstaedter.). 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 perfectl
RMPG0R5X–. Diseases of plants induced by cryptogamic parasites : introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae . Plant diseases; Parasitic plants; Fungi. Fig. 3i.Cj/xtopus candidta. B, Conidlophores isolated from the cushion ; the coDidia or sponuigia are united by intermediate cells. C, Sporangia breaking up CO form swarm-spores. I), Swarm-sporcs escaping. E, Swarm-spores in motile condition. F, Swarm-spores come to rest and germinating. G, Two germ-tubes entering a stoma of Lepidium sativum; the stoma is shown from the inside, so that the spores from which the ger
![. Parasites and parasitosis of the domestic animals : the zoo?logy and control of the animal parasites and the pathogenesis and treatment of parasitic diseases . Domestic animals. THE TICKS 137. Fig. 76.—Capitulum (rostrum), of an argasid tick: h, hypostome; c, chelicerEe; p, palpi; b, basi.s oapituli. al)sent in the Argasidie—is a hai'd, ])lat(-'-like structure localed imuie- diately posterior to the eapituluni. In the male it usually- covers the entire, or almost the entire, dorsal surface, in nymphs it covers the anterior portion; while in the adult female it is nmch smaller and confined to Stock Photo](https://c8.alamy.com/comp/RE1BKR/parasites-and-parasitosis-of-the-domestic-animals-the-zoology-and-control-of-the-animal-parasites-and-the-pathogenesis-and-treatment-of-parasitic-diseases-domestic-animals-the-ticks-137-fig-76capitulum-rostrum-of-an-argasid-tick-h-hypostome-c-cheliceree-p-palpi-b-basis-oapituli-alsent-in-the-argasidieis-a-haid-lat-like-structure-localed-imuie-diately-posterior-to-the-eapituluni-in-the-male-it-usually-covers-the-entire-or-almost-the-entire-dorsal-surface-in-nymphs-it-covers-the-anterior-portion-while-in-the-adult-female-it-is-nmch-smaller-and-confined-to-RE1BKR.jpg ". Parasites and parasitosis of the domestic animals : the zoo?logy and control of the animal parasites and the pathogenesis and treatment of parasitic diseases . Domestic animals. THE TICKS 137. Fig. 76.—Capitulum (rostrum), of an argasid tick: h, hypostome; c, chelicerEe; p, palpi; b, basi.s oapituli. al)sent in the Argasidie—is a hai'd, ])lat(-'-like structure localed imuie- diately posterior to the eapituluni. In the male it usually- covers the entire, or almost the entire, dorsal surface, in nymphs it covers the anterior portion; while in the adult female it is nmch smaller and confined to Stock Photo")
RMRE1BKR–. Parasites and parasitosis of the domestic animals : the zoo?logy and control of the animal parasites and the pathogenesis and treatment of parasitic diseases . Domestic animals. THE TICKS 137. Fig. 76.—Capitulum (rostrum), of an argasid tick: h, hypostome; c, chelicerEe; p, palpi; b, basi.s oapituli. al)sent in the Argasidie—is a hai'd, ])lat(-'-like structure localed imuie- diately posterior to the eapituluni. In the male it usually- covers the entire, or almost the entire, dorsal surface, in nymphs it covers the anterior portion; while in the adult female it is nmch smaller and confined to
RMPG42YB–. Diseases of plants induced by cryptogamic parasites : introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae . Plant diseases; Parasitic plants; Fungi. Fio. 14. Fig. 13.—Tracheid of Pinus sytvestris destroyed by Travutes pini. The primary cell-WHll is completely dissolved from below upwards to a^ a; 6, secondary and tertiary layers of the walls consisting in the under portion of cellulose only, in which gi'anules of chalk are recognizable ; c, fungus-hyphae boring through the walls, leaving holes d and e. (After R. Hartig.) Fic. 14.—Tracheid of Pinus destroyed by P
RMRT0XHA–. Animal parasites and human disease. Insect Vectors; Parasites; Parasitic Diseases; Medical parasitology; Insects as carriers of disease. 126 INTESTINAL FLAGELLATES AND CILIATES Ciliates Balantidium coli, — Although several species of ciliates have been recorded as human parasites, there is only one species, Balantidium coli (Fig. 34A), normally parasitic in hogs, which is common enough to be of any importance. This large ciliate stands next to Endamceba histolytica among the Protozoa as a. Fig. 34. Balantidium coli; A, free ciliate from intestine; n., nucleus; c. v., contractile vacuoles; f.
RMPG45GJ–. The fungi which cause plant disease . Plant diseases; Fungi. Fia. 416.—Sporodesmium antiquum. After Sac- caxdo. S. exitiosum var. solani Schenck is reported as the cause of a potato disease. S. solani-varians Yanha is the cause of potato disease in Europe, the foliage bearing brown spots and finally dying in a manner resembling death caused by Phytophthora. Cladosporium and pycnidial forms are said to exist. S. mucosum Sacc. was reported by Ader- holt on cucumber fruit and leaves causing disease. S. scorzonerae Aderh. causes a salsify stem and leaf disease.'^* Other parasitic species are: S.
RMRN4T8B–. Animal parasites and parasitic diseases. Domestic animals; Veterinary medicine. PARASITOLOGY. 157 fested through water or food contaminated by the ova or embryos. A?ii>nals Infested.—The ox and sheep. Parts Infested.—The small intestines. Symptoms.—Cattle and sheep infested by only a few worms of this species, do not show any notice- able constitutional effect. Should myriads infest them, the animal may show an unthrifty condition, due to irritation and loss of nutrients. Treatment. — After a i the infested animals have been fasted for twenty-four hours, they should be given a physic and
![. Diseases of plants induced by cryptogamic parasites : introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae . Plant diseases; Parasitic plants; Fungi. Fia. 49.—ExotLscus pruni. Miilforraed Plums—"pocket plums" ; one which is cut shows the rudimentary stoue. ^ natural size. (v. Tubeuf phot.) Fig. 50.—Exoascus pruni on twig of Prunus Padua (at end of July). Four of the ovaries- are malformed, (v. Tuheuf deL). Fig. 51.—Exoascus pintni. Young twigs of Plum, showing effects of mycelium. The shoots are swollen and distorted, one diseased leaf remains hypertrop Stock Photo](https://c8.alamy.com/comp/PG42RM/diseases-of-plants-induced-by-cryptogamic-parasites-introduction-to-the-study-of-pathogenic-fungi-slime-fungi-bacteria-amp-algae-plant-diseases-parasitic-plants-fungi-fia-49exotlscus-pruni-miilforraed-plumsquotpocket-plumsquot-one-which-is-cut-shows-the-rudimentary-stoue-natural-size-v-tubeuf-phot-fig-50exoascus-pruni-on-twig-of-prunus-padua-at-end-of-july-four-of-the-ovaries-are-malformed-v-tuheuf-del-fig-51exoascus-pintni-young-twigs-of-plum-showing-effects-of-mycelium-the-shoots-are-swollen-and-distorted-one-diseased-leaf-remains-hypertrop-PG42RM.jpg ". Diseases of plants induced by cryptogamic parasites : introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae . Plant diseases; Parasitic plants; Fungi. Fia. 49.—ExotLscus pruni. Miilforraed Plums—"pocket plums" ; one which is cut shows the rudimentary stoue. ^ natural size. (v. Tubeuf phot.) Fig. 50.—Exoascus pruni on twig of Prunus Padua (at end of July). Four of the ovaries- are malformed, (v. Tuheuf deL). Fig. 51.—Exoascus pintni. Young twigs of Plum, showing effects of mycelium. The shoots are swollen and distorted, one diseased leaf remains hypertrop Stock Photo")
RMPG42RM–. Diseases of plants induced by cryptogamic parasites : introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae . Plant diseases; Parasitic plants; Fungi. Fia. 49.—ExotLscus pruni. Miilforraed Plums—"pocket plums" ; one which is cut shows the rudimentary stoue. ^ natural size. (v. Tubeuf phot.) Fig. 50.—Exoascus pruni on twig of Prunus Padua (at end of July). Four of the ovaries- are malformed, (v. Tuheuf deL). Fig. 51.—Exoascus pintni. Young twigs of Plum, showing effects of mycelium. The shoots are swollen and distorted, one diseased leaf remains hypertrop
RMRN4RC3–. Animal parasites and human disease. Insect Vectors; Parasites; Parasitic Diseases; Medical parasitology; Insects as carriers of disease. DEVELOPMENTAL STAGES 95 lum that the animal moves through the blood or other fluids of the body, either forward or backwards, so rapidly that it is difficult to observe under the high power of a microscope as it wends its way between the blood corpuscles on a slide. The body of the animal contains, in addition to the large round nucleus near the middle, another deeply-staining structure, the parabasal body (see p. 31) at the posterior end near where the fla
RMPG4BHA–. Diseases of plants induced by cryptogamic parasites : introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae . Plant diseases; Parasitic plants; Fungi. LOPHODEEMIUM. 239 Lophodermium nervisequium (D. C.)^ (U.S. America). This very common fungus attacks both old and young silver firs. The needles die after becoming brown, and remain for a long 1/. Fia. 124.—lophodermium nervisequium on Abies pectinata (Silver Fir). 1, Under surface of needle with apothecia. 2, Upper surface with pycnidia. Fig. 125.—Lophodermium nervisequium. Section of a needle of Silver Fir. b, Pyc
RMRE0HB3–. Parasites and parasitosis of the domestic animals : the zoo?logy and control of the animal parasites and the pathogenesis and treatment of parasitic diseases . Domestic animals. THE TAPEWORM LARVAE 199 som relative to this method, Federal meat inspection regulations provide that beef carcasses showing a slight degree of infestation may be passed for food if held for six days at a temperature not exceeding 15° F. (-9.44° C), as an alternative to the requirement of retention for twenty- one days. Symptoms.—Symptoms in bovine measles are practically nil. There is rarely a history of disturbance
RMPG42J4–. Diseases of plants induced by cryptogamic parasites : introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae . Plant diseases; Parasitic plants; Fungi. Fig. 77.—Nectna cin^iabari^ia, with peri- thucia on the dead bark of a still-living stem of Elm. Infection has evidently hegun at the wound of a cut branch near the middle, and extended outwards, (v. Tubeuf phot.) Fig. 78.—Nectria. cinnabaHna. Portion of branch (magnified). Light-coloured cushions of conidiophores with conidia are breaking out towards the upper end, and colonies of hard red perithecia towards the lo
RMRN4P9G–. Animal parasites and human disease. Insect Vectors; Parasites; Parasitic Diseases; Medical parasitology; Insects as carriers of disease. COCCIDIANS 171 host cell which has been preyed upon and destroyed, invade fresh cells, multiply again, and thus eventually destroy large portions of the lining of the digestive tract. The daughter coccidians are not adapted for withstanding conditions outside the intestine. Fig. 48. Life history of Eimeria avium. A, infection of epithelial cells of in- testine by sporozoites ingested with food or water; B, growth inside cell; C and D, sporulation and format
RMPG42DE–. Diseases of plants induced by cryptogamic parasites : introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae . Plant diseases; Parasitic plants; Fungi. POLYPOKUS. 439 Seynes,^ three other kinds of spores are produced in addition to basidiospores. Willow, poplar, oak, sweet chest- nut, alder, ash, hazel, pear, cherry, robinia, larch, silver fir, etc., are common hosts of this parasite. Wood infested by the mycelium darkens in colour, exhibiting a red- rot. Vessels and all clefts or spaces become filled with white felted masses of mycelium. The wood, in course of des
RMRN4RT7–. Animal parasites and parasitic diseases. Domestic animals; Veterinary medicine. PARASITOLOGY. 185. Fig. 72—Sarcocystis Miescheki, Drawing made with Camera lucida. 1, Cross section sarcocyst, muscle cell enclosing sarcocyst ruptured. 2, Cross section of heart mugcle cell. 3, Fibrous connective tissue.. 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
RMPG42MX–. Diseases of plants induced by cryptogamic parasites : introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae . Plant diseases; Parasitic plants; Fungi. Fig. 64.—Exoascus cai-neus on Betula odorata. (v. Tubeuf del.). Fig. 65.—Section of normal leaf of Betula odorata. (After W. G. Smith.). 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.. Tubeuf, Karl, freiherr von, 1862-1941; Smith, William G. Lond
RMRDFYX1–. Animal parasites and parasitic diseases . Domestic animals; Veterinary medicine. PARASITOLOGY. 179 fested through water or food contaminated by the ova or embryos. Animals Infested.—The ox and sheep. Paris Infested.—The small intestines. Symptoms.—Cattle and sheep infested by only a few worms of this species, do not show any notice- able constitutional effect. Should myriads infest them, the animal may show an unthrifty condition, due to irritation and loss of nutrients. Treatment. — After the infested animals 5 have been fasted for twenty - four hours, they should be given a physic and para
RMPG4BKF–. Diseases of plants induced by cryptogamic parasites : introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae . Plant diseases; Parasitic plants; Fungi. Fig. 111.—Aglaospora taleola. Portion of cortex with embedded stromata. a. Corky layer; b, after removal of corky layer; c, section of stroma. ( X y.) (After Hartig.). Fio. 112.—Section of stroma of j4^/aospora. a, Boundary of stroma formed of dark brown fungus - m ycelium; b, sclerenchyma-strand of the cortex ; c, conidial cushion ; d, union of necks of two perithecia. (After Hartig.). Please note that these images
RMRN51Y1–. Animal parasites and human disease. Insect Vectors; Parasites; Parasitic Diseases; Medical parasitology; Insects as carriers of disease. ASCARIS 273 Ascaris or Eelworm. — Of greatest importance of these lesser intestinal parasites is the eelworm, Ascaris lumbricoides (Fig. 106). Ascaris is one of the largest nematode parasites known, the female averaging about ten inches in length, and occasion- ally measuring a foot and a half, while in diameter the body is about as large as an ordinary lead pencil. The males are usually several inches shorter. These worms are among the most fre- quent huma
RMPG4BPH–. Diseases of plants induced by cryptogamic parasites : introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae . Plant diseases; Parasitic plants; Fungi. Fig. 96.—Gibbera vaccinii. Isolated ascns with, eight spores; isolated hair from the outside of a perithecium. (v. Tubeuf del.) Fig. 95.—Gibbera vaccinii on Cowberry. The perithecia form black patches on the living leafy branch, as well as the dead brown one. (v. Tubeuf del.). ^-^ Fig. 97.—Gibbera vaccinii. Cross-section of Cowberry showing^ a patch of perithecia in section; the hairy perithecia contain paraphyses a
RMRN42G4–. Animal parasites and human disease. Insect Vectors; Parasites; Parasitic Diseases; Medical parasitology; Insects as carriers of disease. LIFE HISTORY 409 lairs or rubbish piles in which they hatched, avoiding light and feeding upon what bits of organic matter they can find, such as mouse pills, crumbs, hairs, epidermal scales from their hosts and the excrement of adult fleas. Some species, if not all, devour their shed skins after moulting. According to Bacot and Ridewood, who have recently made observations tm the larvae of a number of species of fleas, the larvae become very excited and im
RMPG42HM–. Diseases of plants induced by cryptogamic parasites : introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae . Plant diseases; Parasitic plants; Fungi. NECTRIA. 189 of Breslau, Berlin, Paris, Kew, Glasnevin (Dublin), and Edinburgh. Nectria ipomoeae Hals.^ Stem-rot of egg-plant and sweet potato. In America this attacks young growing plants, and causes stem-rot. The Fusarium-stage developes as a white mouldy coating on the withered stem, and is followed later by flesh-coloured clusters of perithecia. Poly stigma. On the leaves of species of Prunus, one finds bright-c
RMRN4TJJ–. Animal parasites and parasitic diseases. Domestic animals; Veterinary medicine. PARASITOLOGY, 2l Animals Attacked.—They produce irritation by their numbers upon the skin or wounds of any animal, and by imbibing the exudate and perspiration. They carry germs from the wounds or excreta of one ani- mal to another. MuscA VoMiTORiA (Vomitoria—causes vomiting, musca—fly.) Synonyms.—Blow-fly; bluebottle fly; calliphora vomitoria. History.—Found widely distributed. Description.—The fly is about four times the size of a house-fly. Its eyes are brownish in color ; thorax and abdomen bluish green. Life
RMPG4AXX–. Diseases of plants induced by cryptogamic parasites : introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae . Plant diseases; Parasitic plants; Fungi. 390 UREDINEAE. In May or June the cushions swell up and become large brownish-yellow gelatinous clumps, dotted over with dark points, the teleutospores. Promycelia arise from one or more germ- pores in each spore, and give off basidia with sporidia (basidio-. FiG. 224.—Aecidia and Pycnidia of various species of Gyninosporangium : G. tremetloides—1 and S, aecidia on leaf of Pyrvs Ai-ia ; 5 and 6, aecidia on leaf of P
RMRN4RWB–. Animal parasites and parasitic diseases. Domestic animals; Veterinary medicine. PARASITOLOGY. 177 nose may be observed; there may be a nasal discharge and swelling of the submaxillary lymph glands;. there is a loss of appetite, a stairy coat and the ani- mal gradually becomes emaciated ; swellings appear in the region of the chest, abdomen, sheath, etc.. 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. (Benjam
RMPG4BAM–. Diseases of plants induced by cryptogamic parasites : introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae . Plant diseases; Parasitic plants; Fungi. 284 USTILAGINEAE. formation of conidia ensues; the conidia multiply in a yeast- like manner, and only grow out as hyphae on exhaustion of nutritive material. Infection takes place on seedling-plants. Kiihn cultivated this species on Sorghum saccharatum and S. vulgare, and suggests that a common disease of Durra in South Africa may be caused by this parasite. Ust. sorghi (Link.) {Ust. Tulasnei Kiihn) (U.S. America):
RMRDH78G–. Animal parasites and parasitic diseases . Domestic animals; Veterinary medicine. Fig 4—Trumbldlum Holoserl- oliim. a. Piercing mandibLes. h. Palpi. 0. Uterus.,. Fig. 5—Dermanyssus Galliaae. a, Rostrum. b. Palpus. Fig. 6—Cylodlte* Nudus. a. Rostrum b. Ambulacrum Cv Pedicle to samtf-. 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, Benjamin Franklyn, 1874-. Chicago : A. Eger
RMPG42R0–. Diseases of plants induced by cryptogamic parasites : introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae . Plant diseases; Parasitic plants; Fungi. THE PARASITIC EXOASCEAE. 161 Exoascus alpinus Johan. and Ex. nanus Johan. Both occur on Betula nana, and induce formation of hypertrophied twigs.. Fig. 56.— Witches' Broom of the Cherry. Exoascus cerasi oa Prunus Cerasus. The whole left side forms a large broom. A smaller example occupies the summit of the crown, while another hangs downwards to the right. In winter condition. (t. Tubeuf phot.) The mycelium of Ux. n
RMRN42EM–. Animal parasites and human disease. Insect Vectors; Parasites; Parasitic Diseases; Medical parasitology; Insects as carriers of disease. CHIGGER 419. Chigger or burrowing flea, Der- X 18. protruding end of the abdomen. Sometimes the entire female is expelled with her eggs by the pressure of the inflamed tissue which surrounds her. The eggs, which fall to the ground, soon hatch into typical flea larvae (Fig. 185). These, if they happen to fall on sandy soil under conditions suitable for their development, grow to maturity, pupate in a cocoon and emerge as adult insects in the course of ten da
RMPG4B81–. Diseases of plants induced by cryptogamic parasites : introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae . Plant diseases; Parasitic plants; Fungi. 312 USTILAGINEAE. germination produce a thread-like promyeelium bearing apical conidia, which conjugate in pairs before emerging from the host-tissues. The following species form conidia on the host-plant: Entyloma serotinum Schroet. occurs on leaves of Symphytum tuberosum, S. officincdis, and Borago officinalis. E. canescens Schroet. On Myosotis (Britain). E. fuscum Schroet. On Papaver Rhoeas and /'. Argemone. E. b
RMRN531R–. Animal parasites and parasitic diseases. Horses; Domestic animals -- Parasites; Veterinary medicine. 76 PARASITOLOGY. tiis. The dorsal shield is slightly smaller, and is light in color ; the palpi are short. In the male the dorsal shield covers the entire dorsal surface. The free extremity of the leg is provided with two hook- lets and a fan-shaped organ, instead of the globule shaped apparatus, as in the species Annulatus. Condition Produced.—They carry the protozoa pro- ducing fever as Boophilus Annulatus does in the United States. Dermacentor Electus (Derma—skin ; kentesis—puncture). Sy7i
![. Diseases of plants induced by cryptogamic parasites : introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae . Plant diseases; Parasitic plants; Fungi. 214 ASCOMYCETES.. active vegetation begins about two and a half months later than in the plains, i.e. at the beginning of June. The season of mature spores of Sphaerella is thus delayed till about the middle of August. On 26 th September I found at this elevation only a few spots on the larch needles, and on these hardly any conidial cushions. By 28 th September this larch plantation was already under snow." &q Stock Photo](https://c8.alamy.com/comp/PG4BMP/diseases-of-plants-induced-by-cryptogamic-parasites-introduction-to-the-study-of-pathogenic-fungi-slime-fungi-bacteria-amp-algae-plant-diseases-parasitic-plants-fungi-214-ascomycetes-active-vegetation-begins-about-two-and-a-half-months-later-than-in-the-plains-ie-at-the-beginning-of-june-the-season-of-mature-spores-of-sphaerella-is-thus-delayed-till-about-the-middle-of-august-on-26-th-september-i-found-at-this-elevation-only-a-few-spots-on-the-larch-needles-and-on-these-hardly-any-conidial-cushions-by-28-th-september-this-larch-plantation-was-already-under-snowquot-q-PG4BMP.jpg ". Diseases of plants induced by cryptogamic parasites : introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae . Plant diseases; Parasitic plants; Fungi. 214 ASCOMYCETES.. active vegetation begins about two and a half months later than in the plains, i.e. at the beginning of June. The season of mature spores of Sphaerella is thus delayed till about the middle of August. On 26 th September I found at this elevation only a few spots on the larch needles, and on these hardly any conidial cushions. By 28 th September this larch plantation was already under snow." &q Stock Photo")
RMPG4BMP–. Diseases of plants induced by cryptogamic parasites : introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae . Plant diseases; Parasitic plants; Fungi. 214 ASCOMYCETES.. active vegetation begins about two and a half months later than in the plains, i.e. at the beginning of June. The season of mature spores of Sphaerella is thus delayed till about the middle of August. On 26 th September I found at this elevation only a few spots on the larch needles, and on these hardly any conidial cushions. By 28 th September this larch plantation was already under snow." &q
RMRN4TA9–. Animal parasites and parasitic diseases. Domestic animals; Veterinary medicine. PARASITOLOGY. 137 arranged, point backwards. The hooklets are very small and resemble, in shape, those of a cat's claw. The posterior half of the female is attenuated until it is no larger than a knitting needle; the female is eight to twelve inches long, the male three to four inches. Life Cycle.—The fe- male is oviparous; the eggs are oblong and contain fully developed embryos, in a few days after they have passed to the ground with the feces; if they are in- gested by the intermed- iate host, which is the larv
RMPG4ANT–. Diseases of plants induced by cryptogamic parasites : introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae . Plant diseases; Parasitic plants; Fungi. 416 UKEDINEAE. P. Ravenelii Thiim. On Piiitts aitstralis in North America (probably a variety of P. oblongisporium). P. deformans Mayr. On Pinus mitis in America. P. giganteum (Mayr). On Pimts deiuijlora and P. Thunhergii in Japan. This causes very conspicuous deformation of its host (Figs. 249 and 250). P. complanatum Barcl. On Pinus longifolia in India. The following species frequent other hosts: Peridermium conon
RMRN4M0M–. Animal parasites and human disease. Insect Vectors; Parasites; Parasitic Diseases; Medical parasitology; Insects as carriers of disease. 516 FLY MAGGOTS AND MYIASIS eggs hatch, and the larvae burrow out through the wall of the oesophagus, migrate through whatever tissues they may find in their path, and ultimately reach a position just under the skin, usually on the back, where they finish their development. Occa- sionally the larvae penetrate the skin directly, but the indirect. Fig. 247.. Please note that these images are extracted from scanned page images that may have been digitally enha
RMPG4B14–. Diseases of plants induced by cryptogamic parasites : introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae . Plant diseases; Parasitic plants; Fungi. Fig. 209.—Chrysomyxa rhodcdendrl. Twig of Rhododendron hirsvXum with sori of nredo- Fig. 210.—Chrysotnyxa rhododendri on Rho- spores on the lower epidermis, causing dis- ttodendron fein-ugincv.m. Uredospore-sori in coloured spots on the upper, (v. Tubeuf September as elongated white stripes on the del.) stem below the leaves, (v. Tubeuf deL) The uredospores are yellow and ovoid, with granular protuber- ances on thei
RMRN4P64–. Animal parasites and human disease. Insect Vectors; Parasites; Parasitic Diseases; Medical parasitology; Insects as carriers of disease. SARCOSPORIDIA 175 several inches in length. Microscopic examination shows that these patches are cysts containing thousands of tiny spores, segregated into chambers (Fig. 52A) which correspond to the pansporoblasts of Rhinosporidium. The spores (Fig. 52C), es- caping from the cyst, ultimately develop into new cysts in much. Fig. 52. Sarcosporidia. A, Sarcocyslis blanchardi of ox, longitudinal section of infected muscle fiber (m. f.) showing spores (sp.) in
RMPG3TPN–. Diseases of plants induced by cryptogamic parasites : introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae . Plant diseases; Parasitic plants; Fungi. 488 FUNGI IMPERFECTI. Faded spots appear on the leaves, becoming later greyish brown dotted over with minute black points, the couidial patches.' C. ampelinum Cav. causes little dry spots on the leaves of vine, fre- quently in such numbers that the whole leaf dries up. C. kentjae Hals, attacks palm-seedlings so that their leaves do not unfold. C. cyclameneae Hals, occurs on Cydamen. Scoleco-Allantosporae. Cylindrosp
RMRN524P–. Animal parasites and human disease. Insect Vectors; Parasites; Parasitic Diseases; Medical parasitology; Insects as carriers of disease. DWARF TAPEWORM 243 by the armed head, and become adult. It is said that eggs of this parasite can be found in the faeces within a month after an egg of the preceding generation has been swallowed. Self- infection with these eggs rarely occurs, since the eggs will not develop unless acted upon by the gastric juices. There is still room for doubt as to whether an insect is not commonly involved as an intermediate host as in other species of Hymenolepis; in fa
RMPG42PW–. Diseases of plants induced by cryptogamic parasites : introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae . Plant diseases; Parasitic plants; Fungi. 162 ASCOMYCETES. into the inner tissues of newly-formed twigs and leaves. The mycelium of Ex. alpinus passes the winter in the buds, spreading thence in spring into young twigs and leaves.. Fig. 57.—Exoascus cerasi on Prunns Ceratm. Cherry-tree in blossom, with the exception of four witches' brooms. The tree is as yet leafless except the brooms, which are in full foliage and show up dark. (v. Tubeuf phot.J Exoascus
RMRE1BK3–. Parasites and parasitosis of the domestic animals : the zoo?logy and control of the animal parasites and the pathogenesis and treatment of parasitic diseases . Domestic animals. FiG. 78.—Stigmal plates of ticks: 1, IM:irgarf>piis; 1^, Ixodes; .3, Dcrmacentor.. Fig. 78A.—Stigmal plate ot Margaropus anniilatus (photomicro- graph of mounted specimen, by Hoedt). apod). The pairs are numbered I to IV from before to behind. They are composed of six articles or segments which are united by articul- ations. 13. The Coxa or first article is an immovable portion which lies flat upon the body and up
RMPG4B7F–. Diseases of plants induced by cryptogamic parasites : introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae . Plant diseases; Parasitic plants; Fungi. UROCYSTIS. 315 Urocystis occulta (Wallr.). (Britain and U.S. America.) This species is common on the haulms, leaves, leaf-sheaths, and less commonly on floral parts of Secale cereale (rye). It causes the. Fig. 172.—Urocystis occulta on Rye. The ears are stunted, and the spore- powder emerges frpm longitudinal fissures in the upper part of the stems, (v. Tubeuf phot.) formation of grey stripes, from which a black spo
RMRDFYTT–. Animal parasites and parasitic diseases . Domestic animals; Veterinary medicine. PARASITOLOGY. 199 nose may be observed; there may be a nasal discharge and swelling of the submaxillary lymph glands;. there i^ a loss of appetite, a stairy coat and the ani-- mal gradually becomes emaciated ; swellings appear in the region of the chest, abdomen, sheath, etc.. 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, Benjamin Fr
RMPG42RH–. Diseases of plants induced by cryptogamic parasites : introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae . Plant diseases; Parasitic plants; Fungi. 158 ASCOMYCETES. contain only conidia, whereas those on Almis-incana are said by Sadebeck to contain only ascospores, unless on very rare occasions. In the lower and higher Alps, although both species of alder are not infrequently found together, yet the Exoascus is found only on Alnus incaria, and no species occurs on A. glutinosa. r. Fig. 53.—Exoascus alni-incanae in catkins of Alnus incana. Many of the scales are
RMRN51XM–. Animal parasites and human disease. Insect Vectors; Parasites; Parasitic Diseases; Medical parasitology; Insects as carriers of disease. 274 OTHER INTESTINAL ROUNDWORMS Ascaris lumbricoides, is now usually looked upon as a variety of the species which occurs in hogs in almost every country in the world, and which is sometimes known as A. suilla. The life history of Ascaris is usually thought to be very simple. The eggs, of which thousands are deposited by a single female, develop within the eggshell outside of the human body, in water, soil or manure piles, wherever the proper conditions of
RMPG49W6–. Diseases of plants induced by cryptogamic parasites : introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae . Plant diseases; Parasitic plants; Fungi. 462 BASIDIOMYCETES. scales arranged regularly in concentric lines. The stools break out from living stems through cracks in the bark or from wounds, e.g. those made by wood-peckers. The fir-wood, normally white, assumes, when diseased, a yellow or honey-colour, more or less like the sporophore, while here and there, parts may become light brown. The hyphae grow in all direc- tions, but especially as white strands up
RMRN4TWP–. Animal parasites and parasitic diseases. Domestic animals; Veterinary medicine. PARASITOLOGY. 27 body heavy, and covered with soft, yellowish hair. Theeyes aresmall. The female is provided with along ovipositor. The posterior of the male is rounded. Life Cycle.—The eggs are oval in shape, light yel- low in color, and are cemented to the hair of the animal attacked, principally in the region of the jaws and fore limbs. The fly hovers over the region on which the egg is to be deposited, then darts down, cements it to the hair in an instant, retreats a few feet, hovers again, then deposits anot
RMPG45JM–. The fungi which cause plant disease . Plant diseases; Fungi. THE FUNGI WHICH CAUSE PLANT DISEASE 589 Hyphae verticillate; sterile hy- phaB present 13. Mucrosporium. Parasitic Conidia mucose-conglobate, allan- toid, often continuous 14. Allantospora. Conidia not mucose-conglobate Conidia ovate-cylindric or elon- gate, often catenulate 15. Ramularia, p. 590. Conidia obclavate-pyriform 16. PirictJaria, p. 591. Septocylindrium Bonardin (p. 588) Coiiidiophores very short, scarcely distinct from the conidia, or in parasitic species distinct but short and inflated or dentic- ulately sublobate at th
RMRN5317–. Animal parasites and parasitic diseases. Domestic animals; Veterinary medicine. PARASITOLOGY. 69 THE TICKS. ARGASIDAE. The family Argasidae includes the ticks. They are provided with flat, oval bodies. The piercing man- dibles and hypostome are located beneath an over- reaching cephalo-thorax, or anterior part of the dorsal. Fig. 25—Argas Miniatus, Larva. a, Mandibles and Palpi. b, Legs. c, Body. surface. The dorsal shield is absent. The life his- tory is similar to that of the common ticks. Argas Miniatus. Synonyjns.—Argas Americanus; Chicken tick. History.—Found in Mexico and the Southern
RMPG4BC3–. Diseases of plants induced by cryptogamic parasites : introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae . Plant diseases; Parasitic plants; Fungi. Pig. 146.—Root-system of a Silver Fir overgrown and killed by tbe mycelium of BJiizina undulata. (After Hartig.) Fig. 147.—Ascospores of Rhisina. o, As taken from the ascus; b, 24 hours aft«r sowing: c, 48 hours after sowing; d, the spore of c enlarged. (After Hartig.) filled up. Masses of fungoid pseudoparenchyma are frequently formed between the dead and diseased tissues. Strands of the nature of Rhizoctonia emerg
RMRN52RM–. Animal parasites and parasitic diseases. Horses; Domestic animals -- Parasites; Veterinary medicine. Figr. 7—Heterakis Papiliosa. (Caudal extremity of male). a, Spiculae unequal length. b, Preanal sucker. c, Papillae.. Fig:. 8—Filaria Iiniiiitis. (Male), a, Cephalic extremity. b, Caudal extremity.. 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
RMPG197F–. The farmer's veterinary adviser : a guide to the prevention and treatment of disease in domestic animals . Veterinary medicine. Skin Diseases. 277 PARASITIC GREASE. CONTAGIOUS FOOT-BOT IN SHEEP. In inflammation of the horse's heel, attended with fungus-hke growths {grapes), a vegetable growth is often present and seems to be a main cause of the disease. The contagions foot-rot in sheep presents the same appear- ance of the skin, and is presumably due to a similar para- site. With or without an abrasion, the matter from a diseased foot produces in the healthy one sweUing, excori- ation and fu
RMRDFYTE–. Animal parasites and parasitic diseases . Domestic animals; Veterinary medicine. PARASITOLOGY. 309. Flgr. 77. Fig: 78. Fig. 77.—The transverse section through the caecum of a chick that died of white diarrhoea; a, muscular layer which, at some points, is invaded by the protozoon, Coccidiuin tenellum. The glands of the mucous membrane have all disappeared except small remnants indicated by b: c. granular degenerated mass from dis- solution of the mucous membrane, magnified 100 times. Fig. 78.—The area in the circle indicated-by b in Fig. 21, magni- fied 900 times. The letters indicate the pro
RMPG4AWR–. Diseases of plants induced by cryptogamic parasites : introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae . Plant diseases; Parasitic plants; Fungi. FlQ. 229.—Two sections from a swelling on a Juniper-branch, a. From the middle of the swelling; the rind under the spore-cushion is much thickened, and the wood is much broken up by tracts of parenchyma. 6, Section from 2 cm. under a; abnormal development of parenchyma in the wood has begun in the outer year-rings. (After Woernle.) the shedding of the cushion, a corky layer arises in the paren- chyma underneath it,
RMRD9KCA–. The dog as a carrier of parasites and diseases. Dogs as carriers of disease; Dogs. PARASITES AND PARASITIC DISEASES OF DOGS 11 CHIGGER INFESTATION Cbttse.—The common American chigger, Trombicula irritans (also called harvest mite), is a small, red or orange-yeUow mite (fig. 7) which as a six-legged larva (the adult mite has eight legs) attacks man and the domesticated animals. It occurs from New York to central Mexico and from the Atlantic Ocean to the Eocky Moun- tains. A very closely relates species occurs in the northern and western part of this country. Chiggers have been thought to bur
RMPG4H45–. The fungi which cause plant disease . Plant diseases; Fungi. 70 THE FUNGI WHICH CAUSE PLANT DISEASE spore. (Fig. 42.) After a more or less protracted period of rest this produces zoospores. The family includes some fifty species, all of which, except two small genera, are parasitic upon land plants. Key to Genera of Synchytriacese Zoosporangia formed by direct division of the entire plasma of the young fruiting body. Swarm sporangia completely filling the host cell, membrane united to the wall of the host cell I. Rozella. Swarm sporangia lying free in the host cell Parasitic on alg£e 2. Woro
RMREFM3Y–. Common diseases of farm animals. Veterinary medicine. 242 PARASITIC DISEASES than tick, as its entire life is spent on the body of a sheep. The general color of the body is brown. The legs are stout, covered with hair and armed with hooks at their extremities. The mouth parts consist of a tubular, toothed proboscis with which the para- site punctures the skin and sucks the blood. Within a few hours after birth, the larvae develop into pupip, which are hard, dark bro'wn in color and firmly glued to the wool. The young louse- fly emerges from the pupa in from three to four weeks. The sheep-tic
RMPG4FNR–. Minnesota plant diseases. Plant diseases. Minnesota Plant Diseases. 83 (b) Many rusts have remarkable powers of stimulation, not only in their influence on size but also in the age of parts. Al- though a host plant may bear the load of such a parasite the fungus may still stimulate it sufificiently to enable it to maintain its normal age relationships so that the fungus and host may live together for years. In the darnel grass lives a smut-hke fungus which is parasitic and which infects the embryo in the seed before the latter is ripe, and thus this fungus lives on from year to year in- fect
RMRN426N–. Animal parasites and human disease. Insect Vectors; Parasites; Parasitic Diseases; Medical parasitology; Insects as carriers of disease. 430 MOSQUITOES lay their eggs singly (Fig. 194) while others lay them all at one time in little boat-shaped rafts called egg-boats, the individual eggs standing upright (Fig. 195). The fact that the eggs are a little larger at the lower end makes the whole egg-boat slightly concave, thus making it difficult to overturn. Most of the com- mon mosquitoes of temperate climates lay their eggs on the open surface of water or at- tach them to some partially submer
![. Diseases of plants induced by cryptogamic parasites : introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae . Plant diseases; Parasitic plants; Fungi. 454 BASIDIOMYCETES. white wood-spots, so characteristic of Polyporus annosiis {Tram, radiciperda), appear only rarely in this species. The destruction of spruce and fir goes on from pith to bark; in the pine, however, it seems to be confined to the heart-wood,. ^"^ Mii^ Fig. 283. — Trainetes pint on Spruce {Picea excelaa). Sporophore on the stem beneath a snag-branch, (v. Tubeuf pbot.) Fig. 2S'k.—Tramete8 pin Stock Photo](https://c8.alamy.com/comp/PG41PE/diseases-of-plants-induced-by-cryptogamic-parasites-introduction-to-the-study-of-pathogenic-fungi-slime-fungi-bacteria-amp-algae-plant-diseases-parasitic-plants-fungi-454-basidiomycetes-white-wood-spots-so-characteristic-of-polyporus-annosiis-tram-radiciperda-appear-only-rarely-in-this-species-the-destruction-of-spruce-and-fir-goes-on-from-pith-to-bark-in-the-pine-however-it-seems-to-be-confined-to-the-heart-wood-quot-mii-fig-283-trainetes-pint-on-spruce-picea-excelaa-sporophore-on-the-stem-beneath-a-snag-branch-v-tubeuf-pbot-fig-2sktramete8-pin-PG41PE.jpg ". Diseases of plants induced by cryptogamic parasites : introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae . Plant diseases; Parasitic plants; Fungi. 454 BASIDIOMYCETES. white wood-spots, so characteristic of Polyporus annosiis {Tram, radiciperda), appear only rarely in this species. The destruction of spruce and fir goes on from pith to bark; in the pine, however, it seems to be confined to the heart-wood,. ^"^ Mii^ Fig. 283. — Trainetes pint on Spruce {Picea excelaa). Sporophore on the stem beneath a snag-branch, (v. Tubeuf pbot.) Fig. 2S'k.—Tramete8 pin Stock Photo")
RMPG41PE–. Diseases of plants induced by cryptogamic parasites : introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae . Plant diseases; Parasitic plants; Fungi. 454 BASIDIOMYCETES. white wood-spots, so characteristic of Polyporus annosiis {Tram, radiciperda), appear only rarely in this species. The destruction of spruce and fir goes on from pith to bark; in the pine, however, it seems to be confined to the heart-wood,. ^"^ Mii^ Fig. 283. — Trainetes pint on Spruce {Picea excelaa). Sporophore on the stem beneath a snag-branch, (v. Tubeuf pbot.) Fig. 2S'k.—Tramete8 pin
RMRE0H9T–. Parasites and parasitosis of the domestic animals : the zoo?logy and control of the animal parasites and the pathogenesis and treatment of parasitic diseases . Domestic animals. Fig. 128.—Gongylonema scutata: a, anterior portion of body, dorsal view; b, posterior extremity of female; c, posterior ex- tremity of male, ventral view; d, same viewed obliquely from left side,—all enlarged (after Ransom, from Neumann, Bull. No. 127, Bureau An. Ind., U. S. Dept. Agr.). of sheep and cattle slaughtered in the abattoirs of this country and Europe. It has also been observed in the horse and in the mout
RMPG2PJ2–. The vegetable industry in New York state ... Vegetables; Gardening. Diseases op Vegetables 1327 CABBAGE Black Rot (Pseudomonas Cam- pestris Erw. Smith). This disease is readily distinguished by the presence of brown or black veins in leaves and cross sections of leaf stalks and plant stems. Badly affected plants are stunted and many of the lower leaves may drop off. The disease originates from the presence of a parasitic bacte- rium either on the seed or in the soil. All danger of disease from seed is removed by soaking for fif- teen minutes in a solution of cor- rosive sublimate, one ounce
RMRDFYXT–. Animal parasites and parasitic diseases . Domestic animals; Veterinary medicine. Plate XIV,. •a. l-.b Trnchealis. CMale and fe- male). a, Head. b, Caudal extrem- ity. Flgr. 1—SfeplianiiTiis Dentatus* (Cephalic extremity). a, Papillae. b, Mouth c, Bucal cavity. d, Oesophagus, c, Intestines.. 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, Benjamin Franklyn, 1874-. Chicago : A. Eger
RMPG4BPB–. Diseases of plants induced by cryptogamic parasites : introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae . Plant diseases; Parasitic plants; Fungi. 208 ASCOMYCETES. will be found changing from vellow to black on account of the periderm and dead stroma becoming darker. On dead branches the large cushions of fructifications will be found to include: {a) perithecia with a warty exterior and pores set in a depression; (&) large pycnidia, standing out from the cushions, with brown smooth coats, and full of compound multiseptate conidia (Fig. 9 9, B; see below No
RMRDFYM5–. Animal parasites and parasitic diseases . Domestic animals; Veterinary medicine. 218 PARASITOLOGY.. Fig. 80. Fig. SO.—Liver from a case of Black-Head. En- tero hepatitis, in a turkey. Photograph. This liver weighed 452 grams (about one pound) ; a, indicates the yellowish-white necrotic areas, lesions of the disease.—From Kaupp's Diseases of Poultry.. 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, Benjamin Franklyn
RMPG0R6E–. Diseases of plants induced by cryptogamic parasites : introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae . Plant diseases; Parasitic plants; Fungi. PHYTOPHTHORA. 121. Fig. 32.—Pkytopkthora infestans. The Potato disease. A, Potato leaf with brown spots and white patches of fuDgi on the lower side. £, Groups of conidio- phores emerging from a stoma close beside a hair of the potato leaf. C, Conidio- phores and conidia, much enlarged. B, Leaf of potato much shrivelled up and brown, as in the later stages of the disea-se. (y. Tubeuf del.). Please note that these im
RMRN4R2Y–. Animal parasites and human disease. Insect Vectors; Parasites; Parasitic Diseases; Medical parasitology; Insects as carriers of disease. DEVELOPMENT IN MAN' 101 Glossina morsitans to become infective varies from 11 to 25 days, but under unfavorable conditions the parasites may remain in the fly in an incomplete stage of development for at least two months. A temperature between 75° F. and 85° F. is necessary for the full development of the parasite n the fly, ending in invasion of the salivary glands. For two days after the trypa- nosomes have been swallowed by the fly they remain infective
RMPG4AMB–. Diseases of plants induced by cryptogamic parasites : introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae . Plant diseases; Parasitic plants; Fungi. EXOBASIDIUM. 425 from each a spindle-shaped spore is abjointed (Fig. 257). The basidiospores divide in water by formation of cross-septa, and a germ-tube arises from each terminal cell. On a young leaf of Vaccinmm the germ-tube penetrates and gives rise to a mycelium (Fig. 258); on other substrata the germ-tube sprouts into several very fine sterigmata, from the extremi- ties of which a series of conidia are abjoint
RMRN534N–. Animal parasites and parasitic diseases. Domestic animals; Veterinary medicine. Fi^'. 32.—Strongylus Arnfieldi, Ova. Process of Segmentation. Drawing made from Ova in Utero, stained with eosin and methylin blue. .(^. Fig. 35—Strongylus Arnfieldi Adults about natural size, a, Male. b, Female. ^3X1 Fig. 33—Strongylus Arnfieldi Cephalic Extremity. a, Mouth, b, Oesophagus. C, Intestines.. 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 origi
RMPG46DE–. The fungi which cause plant disease . Plant diseases; Fungi. 256 THE FUNGI WHICH CAUSE PLANT DISEASE Of the some one hundred twenty species D. citri N. is of in- terest since it forms cankers on orange trees in Brazil. Didymosphaeria Fuckel (p. 251) Perithecia inunersed, later enunpent; asci cylindric to clavate, 8-spored; spores elliptical to ovate, 2-celled, brown. This genus differs from Didymella chiefly in the dark-colored spores. It contains some one hundred twenty species and has occasional parasitic representatives on leaves and twigs.. Please note that these images are extracted fro
RMRN4PWF–. Animal parasites and parasitic diseases. Horses; Domestic animals -- Parasites; Veterinary medicine. 182 PARASITOLOGY. TAENIA OVIS. Where Found.—Frequent in western part of the United States. Description.—Adult worm 12 to 26 inches long. The ter- minal segments are usually longer than broad. The head IS provided with 4 oval suckers and a ros'tellum of from 24 to 36 hooklets. Life History.—Similar to that of the Taenia Marginata except that the cystic form develops in the musculature, both^ skeletal and heart. The cystic stage is called the Cysticercus ovis. The cysts are oval in shape and av
RMPG4BFJ–. Diseases of plants induced by cryptogamic parasites : introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae . Plant diseases; Parasitic plants; Fungi. Fig. 130.—Sections of Maple leaves showing the upper epidermis ruptured by 1, RKytisma acerinwm; 2, Rhytisma 2mnctatum. Fig. 131.—Rhytisma symvietricum Miill. Two leaves of Salix purpurea vrith stromata. A, The upper side. B, The lower side. C, Longitudinal section through the same leaf, showing numerous apothecia on the upper side, fewer on the lower ; the shaded middle part represents leaf-tissue, the remainder is
RMRN4T4M–. Animal parasites and parasitic diseases. Domestic animals; Veterinary medicine. 70 PARASITOLOGY. Animals Infested.—Dog, horse, ox, etc. Description.—The engorged female is about the size of the fever tick, though the legs are longer and the head parts more prominent. The dorsal shield is large, somewhat elongated through the antero- posterior diameter, and is white in color. The hy- postome is provided with six rows of denticles. The. Fig. 21—Amblyomma Americanum Larva. Photomicrograph 1x2/3 inch. a, Mandibles. c, Body. b, Legs. d, Palpi. dorsal surface of the male presents a large, white do
RMPG4BKT–. Diseases of plants induced by cryptogamic parasites : introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae . Plant diseases; Parasitic plants; Fungi. AGLAOSPORA. 227. Pig. 110.âExamples of Oak-stem attacked by Aglaospora tateoLa. 1, Portion â¢diseased for two years; a, the portion still heathy ( x â ^). 2, Portion diseased for four years ( x â ^). 3, Section with spots diseased for four, seven, and ten jrears respectively ( x ^). (After R. Hartig.). Please note that these images are extracted from scanned page images that may have been digitally enhanced for read
RMRDFYTM–. Animal parasites and parasitic diseases . Domestic animals; Veterinary medicine. 206 PARASITOLOGY.. Fig-. 75—Sarcocystis Miescheri. Drawing made with Camera Lucida. 1, Longitudinal section of sarcocyst showing it enclosed in heart muscle cell. (3J 2, Nucleus heart muscle cell. 3, Longitudinal section heart muscle cell.. 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, Benjamin Franklyn, 1874-. Chicago : A. Eger
RMPG3TX1–. Diseases of plants induced by cryptogamic parasites : introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae . Plant diseases; Parasitic plants; Fungi. SEPTORIA. 477 cultivated parsley in Europe and Britain, enemy of celery in the United States. S. armoraciae Sacc. On horse-radish in America. S. consimilis Ell. et Mart, frequents lettuce in America. S. lycopersici Speg. This parasite, originally observed in America, has recently been de- scribed by Briosi and Cavara on tomatoes in Italy. It causes spots on leaves, stems, and fruits, inflicting thereby con- siderabl
RMRN4T6X–. Animal parasites and parasitic diseases. Horses; Domestic animals -- Parasites; Veterinary medicine. PARASITOLOGY. 27 body heavy, and covered with soft, yellowish hair. The eyes are small. The female is provided with a long ovipositor. The posterior of the male is rounded. Life Cycle.—The eggs are oval in shape, light yel- low in color, and are cemented to the hair of the animal attacked, principally in the region of the jaws and fore limbs. The fly hovers over the region on which the ^^z is to be deposited, then darts down, cements it to the hair in an instant, retreats a few feet, hovers a
RMPG4BR3–. Diseases of plants induced by cryptogamic parasites : introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae . Plant diseases; Parasitic plants; Fungi. Fig. 93.—Vine-root with, rows of black sclerotia exposed, and bearing bristle-like conidiophores here and there. (After R. Hartig.) Fig. 92.—Vine-stock with Dematophora Tiecatrix <after a prolonged stay in a moist chamber), a. Fila- mentous mycelium passing over into rhizoctonia- strands (&), which anastomose at c c. U and e, Rhizomorphs growing outwards from the interior. (After R. Hartig.). Fig. 94.—Portion
RMRN4RYK–. Animal parasites and parasitic diseases. Horses; Domestic animals -- Parasites; Veterinary medicine. Fig. 43-Strongylus Arnfibldi, Ova. Process of Segmentation. Drawing made from Ova in Uterc Stained with eosin and methylfn blua ^g. 44'-Strongylus Arnfieldi Adults about natural sis«* a, Male b, Female. %xi Fig. 45-StRONGYLUS ARNFlELDi Cephalic Extremity. a, Mouth, b, Oesophagus. c« Intestines.. 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
![. Diseases of plants induced by cryptogamic parasites : introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae . Plant diseases; Parasitic plants; Fungi. ENTYLOMA. 313 Still to mention are : E. Ellissi Halst., known as "white smut."^ It inhabits spinach {Spinacia oleracea), discolouring the leaves. E. ossifragi Eostr. on Narthedum osdfragwm in Denmark. E. catenulatum Bostr. on Aira caespitosa in Denmark. Fig. 169.—Entylonia Aic}iers<mii. Germin- ated spore with septate promycelium; one promycelial branch remains rudimentary, the other (to left) has produ Stock Photo](https://c8.alamy.com/comp/PG4B7T/diseases-of-plants-induced-by-cryptogamic-parasites-introduction-to-the-study-of-pathogenic-fungi-slime-fungi-bacteria-amp-algae-plant-diseases-parasitic-plants-fungi-entyloma-313-still-to-mention-are-e-ellissi-halst-known-as-quotwhite-smutquot-it-inhabits-spinach-spinacia-oleracea-discolouring-the-leaves-e-ossifragi-eostr-on-narthedum-osdfragwm-in-denmark-e-catenulatum-bostr-on-aira-caespitosa-in-denmark-fig-169entylonia-aiciersltmii-germin-ated-spore-with-septate-promycelium-one-promycelial-branch-remains-rudimentary-the-other-to-left-has-produ-PG4B7T.jpg ". Diseases of plants induced by cryptogamic parasites : introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae . Plant diseases; Parasitic plants; Fungi. ENTYLOMA. 313 Still to mention are : E. Ellissi Halst., known as "white smut."^ It inhabits spinach {Spinacia oleracea), discolouring the leaves. E. ossifragi Eostr. on Narthedum osdfragwm in Denmark. E. catenulatum Bostr. on Aira caespitosa in Denmark. Fig. 169.—Entylonia Aic}iers<mii. Germin- ated spore with septate promycelium; one promycelial branch remains rudimentary, the other (to left) has produ Stock Photo")
RMPG4B7T–. Diseases of plants induced by cryptogamic parasites : introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae . Plant diseases; Parasitic plants; Fungi. ENTYLOMA. 313 Still to mention are : E. Ellissi Halst., known as "white smut."^ It inhabits spinach {Spinacia oleracea), discolouring the leaves. E. ossifragi Eostr. on Narthedum osdfragwm in Denmark. E. catenulatum Bostr. on Aira caespitosa in Denmark. Fig. 169.—Entylonia Aic}iers<mii. Germin- ated spore with septate promycelium; one promycelial branch remains rudimentary, the other (to left) has produ
RMRN4R61–. Animal parasites and parasitic diseases. Horses; Domestic animals -- Parasites; Veterinary medicine. 166 PARASITOLOGY. Animals hdested.—The ox, sheep, pig, etc. Parts Infested—Liver, sometimes the lungs. The writer has noted one case of Hepatic Distomiasis in a pig; four specimens of the Distoma Americanus were found. Cojiditions Produced.—The larval fluke upon being taken into the stomach on grass is liberated by the dissolving of the gelatinous capsule enclosing it. It finds its way to the liver through the hepatic duct and finally becomes stationary in a small bile duct; or it may penetra
RMPG4BR9–. Diseases of plants induced by cryptogamic parasites : introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae . Plant diseases; Parasitic plants; Fungi. Fig. 93.—Vine-root with, rows of black sclerotia exposed, and bearing bristle-like conidiophores here and there. (After R. Hartig.) Fig. 92.—Vine-stock with Dematophora Tiecatrix <after a prolonged stay in a moist chamber), a. Fila- mentous mycelium passing over into rhizoctonia- strands (&), which anastomose at c c. U and e, Rhizomorphs growing outwards from the interior. (After R. Hartig.). Please note that
![. Animal parasites and human disease. Insect Vectors; Parasites; Parasitic Diseases; Medical parasitology; Insects as carriers of disease. SPINOSE EAR TICK 365 agree in the essential detail that the bite results in an irritating lesion which is slow to heal and often leaves an ugly deep scar." The tick is about two-fifths of an inch in length, irregularly oval, with thick turned-up margins, roughly shagreened, and of a yellowish earthy color spotted rusty red. It occurs in the Coast Range mountains of California and in Mexico and according to Herms is most commonly found in the dry leaves Stock Photo](https://c8.alamy.com/comp/RN4335/animal-parasites-and-human-disease-insect-vectors-parasites-parasitic-diseases-medical-parasitology-insects-as-carriers-of-disease-spinose-ear-tick-365-agree-in-the-essential-detail-that-the-bite-results-in-an-irritating-lesion-which-is-slow-to-heal-and-often-leaves-an-ugly-deep-scarquot-the-tick-is-about-two-fifths-of-an-inch-in-length-irregularly-oval-with-thick-turned-up-margins-roughly-shagreened-and-of-a-yellowish-earthy-color-spotted-rusty-red-it-occurs-in-the-coast-range-mountains-of-california-and-in-mexico-and-according-to-herms-is-most-commonly-found-in-the-dry-leaves-RN4335.jpg ". Animal parasites and human disease. Insect Vectors; Parasites; Parasitic Diseases; Medical parasitology; Insects as carriers of disease. SPINOSE EAR TICK 365 agree in the essential detail that the bite results in an irritating lesion which is slow to heal and often leaves an ugly deep scar." The tick is about two-fifths of an inch in length, irregularly oval, with thick turned-up margins, roughly shagreened, and of a yellowish earthy color spotted rusty red. It occurs in the Coast Range mountains of California and in Mexico and according to Herms is most commonly found in the dry leaves Stock Photo")
RMRN4335–. Animal parasites and human disease. Insect Vectors; Parasites; Parasitic Diseases; Medical parasitology; Insects as carriers of disease. SPINOSE EAR TICK 365 agree in the essential detail that the bite results in an irritating lesion which is slow to heal and often leaves an ugly deep scar." The tick is about two-fifths of an inch in length, irregularly oval, with thick turned-up margins, roughly shagreened, and of a yellowish earthy color spotted rusty red. It occurs in the Coast Range mountains of California and in Mexico and according to Herms is most commonly found in the dry leaves
RMPG42XW–. Diseases of plants induced by cryptogamic parasites : introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae . Plant diseases; Parasitic plants; Fungi. ECTOTEOPHIC MYCORHIZA. 95. Fig. 17.—Spruce seedling in third year, grown in clay-loam. Typical coral-like mycorhiza are absent. The strong root to the right shows, on its newer parts and on all lateral roots, only root-hairs and no fungus. The remaining roote are not modified in any way—some are covered with loose fungal caps, others have both fungal caps and root-hairs, while others are quite free from fungi, (v. T
RMRPC3AH–. The American farmer's pictorial cyclopedia of live stock ... Livestock; Veterinary medicine. PARASITIC DISEASES OF THE HORSE. 433 iievei, as is popularly supposed, eats the stomach ; for the holes found in the stomach soon after the death of a healthy ani- mal, are really caused by the action of the gastric juice,—in fact, a kind of self-digestion by the stom- ach itself. The only harm bots can do is to accumulate in such large cpiautities in the stomach and bowels as to interfere with digestion and the free passage of the fijeces. In such cases a purgative may prove advantageous. No specifi
RMPG42C9–. Diseases of plants induced by cryptogamic parasites : introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae . Plant diseases; Parasitic plants; Fungi. Fig. 26S. — Polyporus sutphureus. Hymenial layer, with basidia and spores. (After R. Hartig.). Fig. 2(39.—Potypoi-uJ; siUphureus. The white mycelium forms concentric zones and radial lines on the cross-section of Oak. (After R. Hartig.) surface is shaggy when fresh, and no internal zones are exhibited. The shape is somewhat cushion or bracket-like, but very variable; ^De Seynes, Amud. dn Sci. imt.. Set: V., Vol. i.,
RMRN4RN9–. Animal parasites and human disease. Insect Vectors; Parasites; Parasitic Diseases; Medical parasitology; Insects as carriers of disease. 28 INTRODUCTION TO PROTOZOA protozoans and green algae, makes such a group as the Protista appear both natural and convenient. Structure. — A protozoan, in its simplest form, conforms to the usual definition of a cell — a bit of protoplasm containing a nucleus. Some- --?or.c!l. cytost. Wsah'—oes. V-rnuon. (foregoes.) sk.lwu. cct times there are two or more similar nuclei and in the majority of ciliates there are two nuclei which dif- fer from each other bot
RMPG4B97–. Diseases of plants induced by cryptogamic parasites : introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae . Plant diseases; Parasitic plants; Fungi. USTILAGO. 289 Ust. secalis Eabenh. Eye-brand. This occurs but rarely, and destroys only the grain. Ust. panici-miliacei (Pers.) {Ust. destruens Duby). Smut of Millet. This smut occurs on the flowers of Panicum milia-. FlG. iM.—Uatilago hordei. Barley-smut on Sordeum distiehum. (v. Tubeuf phot.) ceum, P. chartaginiense and P. Crtis-galli in Italy, France, Germany, and North America. Sometimes it is very abundant and
RMRN4MGJ–. Animal parasites and human disease. Insect Vectors; Parasites; Parasitic Diseases; Medical parasitology; Insects as carriers of disease. LIFE HISTORY OF TSETSE FLIES 495 Fig. 233. Newly born larva of tsetse fly, Glossina palpa- lis. X 5. (After Roubaud.) especially on certain large lizards. Lloyd thinks that small mam- mals and birds may be important sources of food for tsetses, for, though these animals are usually able to avoid attacks by the flies during their time of activity, many of the nocturnal species hide during the day in the same places frequented by the flies and would then be e
RMPG4FFP–. Minnesota plant diseases. Plant diseases. Minnesota Plant Diseases. 145 cup fungi, and in particular parasitic forms, build storage or- gans, often as large as a small filbert nut, and the cups are produced in clusters upon this storage organ in the follow- ing spring. Wild anemones, cultivated clovers and plant bulbs are often attacked by such storage-organ-forraing cup fungi, as are also plants of the blueberry family. In the latter case the storage organ replaces the fruit of the host plant and cases are known where the same fungus lives on two different hosts in its life- time just as do
![. Animal parasites and human disease. Insect Vectors; Parasites; Parasitic Diseases; Medical parasitology; Insects as carriers of disease. 480 OTHER BLOOD-SUCKING FLIES 4 5ye — first segment (Fig. 222 prol.) is used for creeping, in conjunction with the posterior sucker, the larva looping along like a " meas- uring worm"; it is also of use in constructing the silken cocoon from the secretions of the salivary glands. This single little leg has a crown of tiny hooklets which make it possible for the possessor to hold its ground even in a torrent of water. The salivary glands referred Stock Photo](https://c8.alamy.com/comp/RN4MT4/animal-parasites-and-human-disease-insect-vectors-parasites-parasitic-diseases-medical-parasitology-insects-as-carriers-of-disease-480-other-blood-sucking-flies-4-5ye-first-segment-fig-222-prol-is-used-for-creeping-in-conjunction-with-the-posterior-sucker-the-larva-looping-along-like-a-quot-meas-uring-wormquot-it-is-also-of-use-in-constructing-the-silken-cocoon-from-the-secretions-of-the-salivary-glands-this-single-little-leg-has-a-crown-of-tiny-hooklets-which-make-it-possible-for-the-possessor-to-hold-its-ground-even-in-a-torrent-of-water-the-salivary-glands-referred-RN4MT4.jpg ". Animal parasites and human disease. Insect Vectors; Parasites; Parasitic Diseases; Medical parasitology; Insects as carriers of disease. 480 OTHER BLOOD-SUCKING FLIES 4 5ye — first segment (Fig. 222 prol.) is used for creeping, in conjunction with the posterior sucker, the larva looping along like a " meas- uring worm"; it is also of use in constructing the silken cocoon from the secretions of the salivary glands. This single little leg has a crown of tiny hooklets which make it possible for the possessor to hold its ground even in a torrent of water. The salivary glands referred Stock Photo")
RMRN4MT4–. Animal parasites and human disease. Insect Vectors; Parasites; Parasitic Diseases; Medical parasitology; Insects as carriers of disease. 480 OTHER BLOOD-SUCKING FLIES 4 5ye — first segment (Fig. 222 prol.) is used for creeping, in conjunction with the posterior sucker, the larva looping along like a " meas- uring worm"; it is also of use in constructing the silken cocoon from the secretions of the salivary glands. This single little leg has a crown of tiny hooklets which make it possible for the possessor to hold its ground even in a torrent of water. The salivary glands referred
RMPG4AY7–. Diseases of plants induced by cryptogamic parasites : introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae . Plant diseases; Parasitic plants; Fungi. WmM m. Fig. 221.—Cross-section of a tract of parenchyma in a malformed Juniper- twig. (After Woemle.) Fig. 222.—Badial longitudinal section through a zone of parenchyma similar to Fig. 221. (After Woernle.) water and plastic material that higher parts of the branch gradually die off, and dormant buds break out on the swelling. Increased growth results in increase in the number of medullary rays, while in the tangent
RMRN4TK5–. Animal parasites and parasitic diseases. Domestic animals; Veterinary medicine. PARASITOLOGY. 91 Ascaris Vituli (Vitulus—a calf.) Synonym.—Ascaris Bovis. Distribution.—Common in Southern Europe; rare in America. Description.—In this species the head is small and distinct; the lips are enlarged at the base and stand i ut prominently : the posterior extremity terminates in a conical point which is reddish white in color; the male is six to eight inches long; the female is eight to ten inches long and oviparous. They have been known to ascend to the abomasum. Animal Infested.—Principally calves
RMPG40TG–. Diseases of plants induced by cryptogamic parasites : introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae . Plant diseases; Parasitic plants; Fungi. Fig. 309.—Fusoma parasiticum. Dis- eased Pine-seedlings, with, a, root killed; b, hypocotyl killed; c, first leaves and plumule killed. (After R. Hartig.). Fig. 310.—Epidermis of a Pine-seedling with a stoma. Some hyphae of Fui^na have produced partial dissolution of cell- walls. (After B. Hartig.) ,tfI5^. Please note that these images are extracted from scanned page images that may have been digitally enhanced for
RMREFM19–. Common diseases of farm animals. Veterinary medicine. 260 PARASITIC DISEASES small intestine. The Echinorhyuclius is not as common a parasite as the Asearide, and it is not usually present in large numbers. Usually, not more than a half-dozen of these worms are found in the intestine of a hog, but in some localities and in hogs that are allowed to root around manure piles and in clover pastures the herd may become badly infected with them and serious losses occur. The average length of the male is about 3 inches (8 cm.) and the female 10 inches (26 cm.). The Trichocephalus crenatus or whip u
RMPG4B1T–. Diseases of plants induced by cryptogamic parasites : introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae . Plant diseases; Parasitic plants; Fungi. Fig. 204.—Diseased stem of Vaccinium in a later stage than Fig. 203. In each epidermal cell (a, a) six mother-cells have been formed, each subdivided into four teleutospores. Promycelia (6) have developed from many of tbe latter, and are in process of abjointing ofE the sporidia from lateral sterigmata. X 420. (After R. Hartig.). Fig. 205.—Calypiospora Goeppertiana. Aecidia on the under surface of needles of Silver
RMRN4PFD–. Animal parasites and parasitic diseases. Horses; Domestic animals -- Parasites; Veterinary medicine. PARASITOLOGY. 209. Pigr. 77. Fig. 78. Fig. 77.—The transverse section through the caecum of a chick that died of white diarrhoea; a, muscular layer which, at some points, is invaded by the protozoori, Coccidium tenellum. The glands of the mucous membrane have all disappeared except small remnants indicated by b; c, granular degenerated mass from dis- solution of the mucous membrane, magnified 100 times. Fig. 78.—The area in the circle indicated by b in Fig. 21, magni- fied 900 times. The lett
RMPG420R–. Diseases of plants induced by cryptogamic parasites : introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae . Plant diseases; Parasitic plants; Fungi. V. Fig. 276.—Polj/piyrus hispidus on pieces of living Ash. (v. Tubeuf phot.). The spores are spindle-shaped and colourless. The fungus is especially common on living hazel, ash, species of maple, beech, mountain ash, horse-chesnut, elm, oak, willow, pear, lime, etc. The wood of the specimen in Fig. 275 exhibited extensive white-rot, the inner parts being completely converted into a soft white spongy mass of mycelium
RMRN4RXR–. Animal parasites and parasitic diseases. Domestic animals; Veterinary medicine. Fig. 4—Seetion tlirougli oyst of Cj-stieerciis ICcliiiioeoe- eiis. Germinal membrane slight- ly detached, with larvae. b, Hydatic membrane. c, Section of liver.. Pig. 5—L a r V a e Cystieereus Ecliluoeoecus. (Magnified). a, Larvae showing rostellum of hooklets. b, Germinal membrane. to which larvae are attached by means of pedicle.. 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 p
RMPG4G44–. The fungi which cause plant disease . Plant diseases; Fungi. THE FUNGI WHICH CAUSE BLANT DISEASE 235 Over seventy species, several of which are parasitic but none of importance in America. C. laburni Pers. is on branches of Cytisus; C. sorbi Karst on Sorbus twigs; C. pityophila (Kze.) d Not. on various conifer twigs; C. berberidis (Pers.) Gray on Berberis; C. elongata (Fr.) Grev. on Robinia; C. piceae Brothwick, on Picea. Mycosphaerellacese (p. 223) Perithecia mostly subepidermal, rarely subcuticular, finally more or less erumpent or even superficial, membranous or leathery, Fig. 169.— Gibbe
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