354 ANIMAL PAEASITES. 



Herbst also introduced capsules of Trichinae under the skin 

 of dogs and cats. The Trichina in them were aborted in a few 

 weeks. 



According to him, Trichinae living free cannot encyst them- 

 selves. 



I did not like to leave unmentioned these views, which are in 

 opposition to my own, but are also only provisional, although I do 

 not believe that anything essential can now be gained from the 

 above statements with regard to* the Trichina of the human 

 subject, in so far as the form described by Owen and Luschka is 

 concerned. 



More recent experiments made by Leuckart, by administering 

 encysted Trichinae to mice, led to no further information. The 

 Trichinae certainly escaped in the alimentary canal of the 

 mice, but that was all. My experiments in administering Tri- 

 chinae to frogs and rabbits produced no results. In the frogs 

 the capsules acquired a green colour, which gave very pretty 

 preparations. 



Prognosis. Good. Even the immigration of the brood of 

 Trichina appears to take place without any general reaction, as 

 it is also borne without injury for many years. 



Therapeutics. Unknown. Perhaps as regards Trichoce- 

 phalus we must observe great precautions in the use of raw 

 meats. 



2. Trichocephalus affinis (?) 



Although this worm, which is stated to have been found at 

 Fort Pitt in a sphacelose tonsil, is rather a beard or awn 

 of some graminaceous plant according to Diesing and Von 

 Siebold, and we have referred it amongst the doubtful worms 

 by the appended note of interrogation, we will still reproduce the 

 determination of the actual species according to Diesing and 

 Dujardin, for the purpose of an independent examination of the 

 subject. 



Caput latitudinis 0*019 0'022 mill., duabus lateralibus, vesi- 

 culosis et alatis intumescentiis instructum ; cutis transverse striata, 

 cum ligamento longo, papillari, papillis majoribus et per endosmosin 

 intumescentibus ornato ; collum longissimum, capillare ; truncus 

 (corpus, Diesing) crassiusculus, in maribus spiraliter involutus, in 

 feminis subrectus vel parum curvatus. 



Mas : 80 mill, seu 25'" V. longus ; collum 53 mill vel ad 17' " 



