Elements of pathological anatomy . POLYCEPHALUS— ECHINOCOCCUS. 115. which the animal inhabits. It is said to have no enclosing cyst. , of Leipsic, after whom it is named, detected it twice in the choroidplexus of the human subject. The second genus, the polycephalus, is extremely rare, and has not, up tothe present time, so far at least as I am aware, been found in man. It iscomposed of a semi-transparent cyst, speckled with minute, opake, whitish spots,and is of a somewhat oval figure ; it is generally very small, and is provided,as the derivation of the name indicates, with a great
Elements of pathological anatomy . POLYCEPHALUS— ECHINOCOCCUS. 115. which the animal inhabits. It is said to have no enclosing cyst. , of Leipsic, after whom it is named, detected it twice in the choroidplexus of the human subject. The second genus, the polycephalus, is extremely rare, and has not, up tothe present time, so far at least as I am aware, been found in man. It iscomposed of a semi-transparent cyst, speckled with minute, opake, whitish spots,and is of a somewhat oval figure ; it is generally very small, and is provided,as the derivation of the name indicates, with a great number of heads. Thesituations which it generally occupies in the inferior animals are the brain,liver, and intermuscular cellular tissue. Two species have been noticed by-authors, the cerebral and the granular (Figs. 27 and 28), which, however, asthey never occur in the human subject, need not be described. The diceras, a genus esta-blished by Sulzer, infests the F,ff27- alimentary canal of animals,and also occasionally that of thehuman subject. The Germanautho
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