. Animal parasites and messmates. Parasites. TRANSMIGRATIONS AND METAMORPHOSES. 219. Fig. 63.—Taenia medio- caneHata. worm, which has no crown of hooks m the middle of its four suckers. This soHtary worm is introduced by means of beef, and the cysticercus, during its abode in the cow, mani- fests ah'eady the peculiar character- istics which enable us to recognize the species, that is to say, no crown of hooks, but four suckers, and in the middle of them, some blotches of pigment. Leuckart fed a calf with eggs of this taenia, and at the end of seventeen days, the animal died of acute mihary tub
. Animal parasites and messmates. Parasites. TRANSMIGRATIONS AND METAMORPHOSES. 219. Fig. 63.—Taenia medio- caneHata. worm, which has no crown of hooks m the middle of its four suckers. This soHtary worm is introduced by means of beef, and the cysticercus, during its abode in the cow, mani- fests ah'eady the peculiar character- istics which enable us to recognize the species, that is to say, no crown of hooks, but four suckers, and in the middle of them, some blotches of pigment. Leuckart fed a calf with eggs of this taenia, and at the end of seventeen days, the animal died of acute mihary tuberculosis, produced by the great abundance of cysticerci. This second species, which had been always confounded with the preceding, and which is nevertheless the more common, has therefore a different origin from the Tsenia solium. Observations made quite recently in the north of Africa demonstrate this. Great difficulty had sometimes been felt in explaining the presence of the taenia in persons who had not eaten pork. This embarrassment arose from the confusion of the two species, and this con- fusion is the more easy as the head of the colony must necessarily be found in order to distinguish them. Scharlau, at Stettin, found taeniae in seven children who had been fed, on account of anaemia, with raw meat. The taeniae were those of this species. We have ourselves found them in children to whom the use of raw meat had been prescribed. We do not think it necessary to speak here of a third species of taenia {T. nana), which also lives at our. 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 Beneden, M. van (Pierre Joseph), 1809-1894. New York, D. Appleton and Company
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectparasit, bookyear1876
