HELMINTHOLOGY HELMIXTHES CYSTICI. 483 



and of a cellular texture, which were connected with the 

 vesicle by the intervention of a contracted part. Now, 

 according to the opinion of Bendz, it would seem that new 

 Cysticerci are developed from these bodies, and are after- 

 wards detached, so that these Cyst-worms multiply by gem- 

 mation. He goes still further, and asserts that the Coenurus 

 cerebralis also multiplies itself in a similar manner by the 

 scission of smaller vesicles, and that probably the smaller 

 Coenurus-cysts which occasionally occur near a large Ccenurus- 

 cyst in the brain of a Sheep, might have originated in this 

 sort of gemmation. 



Klencke (1. c. pp. 28, 101) has taken for granted that 

 the transparent or calcareous corpuscles in the body of 

 Cysticercus, which have already been frequently spoken of 

 as ova, are so really and in truth ; and has, in fact, conveyed 

 the Cysticercus by means of them to various animals, at 

 which truly there is nothing to be wondered at, since 

 such great and unheard of success had previously crowned 

 all his experiments ; he was also enabled even to descry the 

 young Cysticerci proceeding from these supposed ova. It 

 sounds very extraordinary indeed that, according to Klencke, 

 the Ccenurus cerebralis is not propagated by means of ova, 

 but by gemmation and spontaneous 'division ; and yet the 

 Ccenurus contains exactly the same corpuscles as the Cysti- 

 cercus. Klencke cannot have thought of these calcareous 

 corpuscles in the Ccenurus, or otherwise he would certainly 

 have had no difficulty in observing their development into 

 Cyst-worms. It is evident also that his object did not 

 require ova at all, since the transplantation of the Coenvrux 

 cerebralis into various animals, as Dogs, Ilabbits, Goats, 

 &c., by means of fragments of it, retaining one or more 

 heads, and introduced sometimes by injection and inocu- 

 lation, sometimes in the drink of the animals, completely 

 succeeded. 



Pluskal (Oesterr. medizin. Jahrb. 1844, Juli ; p. 54) 

 proposes for the name Ccenurus cerebralis the appellate n 

 Hydatis polistowos medullaris, because this worm (Drehwurm) 



