120 ANIMAL PARASITES. 



the administration of the egcrs of Tcenia solium. And in this 



also we have succeeded. 



j »o 



Experimental proof of the conversion of the six-hooked embryos 

 enclosed in the eggs of Taenia solium into Cysticercus cellulosse. 



After I had made experiments on the production of Cysticercus, 

 in the year 1851, by the administration of the eggs of Tcenia 

 solium to rabbits and dogs, and expressed the opinion that the 

 pig infects itself Avith Cysticercus celluloses when it meets with 

 the eggs and proglottides of Tcenia solium upon the pastures, and 

 after I had published in Giinsburg's ' Zeitchr. fur Klin. Mediz/ 

 for 1853, my observations on the production of staggers in sheep, 

 by administering to them the young of T. coenurus, Van Beneden 

 at the close of the year 1853, set about administering T. solium 

 to two pigs. He actually succeeded, in this way, in rendering 

 one pig measly, and upon this he has reported to the Academies 

 of Sciences in Paris and Brussels. 



Amongst the experiments already mentioned as instituted in 

 common by Professor Haubner and myself, by order of the Saxon 

 ministry of the Interior, was also the experiment upon the pro- 

 duction of Cystic, cellulosce. Five pigs and one sheep were fed, 

 by Professor Haubner, with segments of Taenia solium, partly 

 furnished by Professor Richter, of Dresden, and partly by me. 



1. On the 30th of March and 5th of April a pig received a 

 number of mature segments of Tcenia solium which had been 

 expelled the day before by medicines. The experiment gave no 

 result, as appeared from dissection on the 15th of May. 



2. On the same days a second pig was fed with the same 

 Tcenia, and also on the 20th May with fragments of Tcenia 

 solium which had passed off spontaneously. It was killed on the 

 13th September, but in this case also there was no result. 



3. On the 7th, 24th, and 26th of June, and the 2d of July, 

 three sucking-pigs were fed with segments of tape-worms, partly 

 given off spontaneously and partly artificially expelled, and on 

 the 13th July they were again fed with artificially expelled 

 segments. One of these pigs was killed on the 26th of July, 

 and exhibited young Cysticerci corresponding with the days of 

 administration, of which the largest individuals formed vesicles 



