HELM1NTHOLOGY HELM1NTHES THEM ATODJES. 469 



Besides which he tells us other very remarkable things with 

 respect to Distomum hepaticum. In his opinion, the brown 

 bodies from the oviducts have been erroneously regarded as 

 ova ; they are rather cysts filled with ova. Klencke, in 

 other Avords, declares the vitelliiie cells contained in each 

 ovum of Distoinum hepaticum to be so many ova. He rup- 

 tured these cysts by pressure, and thought by this means 

 to obtain the naked ovules. With these supposed ova, 

 which were nothing but the vitelline substance squeezed out 

 of the egg-membrane, he made experiments by inoculation, 

 which, if any one is disposed to believe it, succeeded perfectly 

 both in Dogs and Cats. Moreover, he perceived in the gall- 

 bladder, together with old Flukes, in the intestinal secretion, 

 and in the blood of the sheep, infusoria-like animalcules ; 

 these creatures were of course the young fry of the Liver- 

 Fluke, and Klencke made with them experiments in infec- 

 tion, and transplanted also in this way the Liver-Fluke into 

 dogs and puppies. 



Dujardin (Annales des Sc. Natur. torn, xx, 1813, p. 338) 

 found, in the intestine of Sorex araneus abundance of a 

 Distomum, which, before it contains ova, resembles a Dis- 

 toinum occurring in the liver of Limax, so that he could 

 not avoid the supposition that the Distomum had been first 

 developed in the Limax, and had been subsequently trans- 

 ported into the intestinal canal of the Shrew-mouse, where 

 it had completed its development. The Reporter agrees 

 with him that something in all respects similar to this takes 

 place with the Distomum eckinatum, since this Fluke is 

 developed in species of Lymnaeus, and it is not until after 

 these Snails have been swallowed by Ducks, Geese, Cormo- 



/ 9 



rants, and Cranes, that the development of the Distomum is 

 completed in the intestine of those birds. Dujardin founds 

 upon this Distoinum of the Shrew-mouse the new genus 

 Brackylaimus, to which he also refers several other Disto- 

 mata, from whose pharynx the two caecal intestinal sacculi 

 immediately proceed and pass backwards. The Distomata 

 referred to this genus are subdivided by Dujardin according 



