. The diseases and disorders of the ox, with some account of the diseases of the sheep. DISEASES OF THE OX AND SHEEP. 469 sporocyst, which in its turn gives rise to about ten redise. These rediae move about within the snail, and thereby cause so much disturbance that but very few snails live for many weeks after they have become infested. The next occurrence is that germs called cercarise, tadpole-like little animals possessed of a flat oval body and a long slender tail, are formed within. Each cercaria is possessed of two suckers corresponding to those of the adult fluke. These cercarise esca
. The diseases and disorders of the ox, with some account of the diseases of the sheep. DISEASES OF THE OX AND SHEEP. 469 sporocyst, which in its turn gives rise to about ten redise. These rediae move about within the snail, and thereby cause so much disturbance that but very few snails live for many weeks after they have become infested. The next occurrence is that germs called cercarise, tadpole-like little animals possessed of a flat oval body and a long slender tail, are formed within. Each cercaria is possessed of two suckers corresponding to those of the adult fluke. These cercarise escape through a special opening, and then wriggle out of the snail, and swim about in the water, until. V Fig. 59.—The Shell of :us Teuncatllus A magnified, B a little larger than the natural size. they come into contact with some plant or other solid substance. Then each comes to rest, attaching itself perhaps to a blade of grass or other similar substance, drawing up its body into the form of a round ball, exuding a gummy, substance containing many granules, and throwing off" its tail. The gummy substance hardens to form a snowy-white envelope or cyst, which is attached to the grass or other object near at hand. Unless it is then swallowed by a sheep or some other animal which is capable of becoming a host for the adult fluke, or even by a human 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 Gresswell, George; Gresswell, Albert. London, Allen
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Keywords: ., bookcentury1800, bookdecade1880, bookpublisherlondo, bookyear1889
