On the Structure and Development of the Cysticercus cellulosae, as Found in the Pig, by George Rainey
then, in a thickening which appeared at the fore part of the very simple vermiform body, was developed the characteristic head of the Cysticercus with its suctorial disks and circlet of hooks. No trace of the six embryo- hooks could be detected in connexion with the cysticerci. These observations of Leuckart were published in 1855, and were not known to the Author when he first commu= nicated his researches to the Royal Society in the sum= mer of that year. Allowing for differences not unlikely to modify the process in different cases, the facts observed by Leuckart are in no way irreconcileable with the conclusions arrived at in this Paper; and after due consideration of the present state of knowledge con= cerning the relations subsisting between the tape-worm and Cysticercus, the Author sees no reason to dis= trust the evidence on which he has represented the <u>Cysticercus cellulosae<\u> as immediately developed from a peculiar vermiform animal, whatever <s>may<\s> be the mode in which the latter may be derived from a taenia-embryo. Finally, the facts made known in this communi= cation may perhaps serve to throw light on the nature of certain bodies of an ambiguous description observed by Von Hessling + to be occasionally present in the muscular tissue of the heart of the Ox, Sheep and Roe Deer. These objects appear under the form of oval aggregations of granules of a peculiar kind, inclosed in an outer capsule and parted into several smaller masses some= what like the segments of a yolk in the process of division. Without hazarding an opinion as to their destination, von Hessling compares these bodies to the elongated tubular capsules filled with similar spore-like granules, which were discovered in the abdominal muscles of mice by Miescher and + Zeitschrift fur wissenschaftliche Zoologie, vol. V. p 196.
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On the Structure and Development of the Cysticercus cellulosae, as Found in the Pig, by George Rainey, 1857. From The Royal Society, PT/56/8
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