32 ANIMAL PAEASITES. 



tered, and these, in order to make the experiment under the most 

 unfavorable circumstances, were administered to a perfectly 

 healthy two-year-old wether, a description of sheep which is 

 usually free from Cosnuri. On the 10th of August the sheep was 

 affected with vertigo; on the 13th the disorder had advanced so 

 far as to necessitate the killing of the animal. Herr Karmsen, of 

 Drausendorf, near Zittau, a very intelligent agriculturist, who had 

 furnished the animal for experiment, unfortunately only sent me 

 the head for examination ; the rest of the body was kept to be 

 eaten by the people on the farm, so that I was prevented from 

 observing the immigration of the brood of the Tcenia into the 

 other parts of the body. In the brain 1 found yellow striae from 

 exudation-passages, at the ends of which small vesicles of the 

 size of a grain of millet were situated. I found fifteen young 

 vesicles of Coenurus, partly on the surface of the brain, which Avas 

 reddened by inflammation, partly in the substance of the brain, 

 and even in the ventricles. I then reported this result to the 

 Saxon Ministry of the Interior, from which Professor Haubner, of 

 the Veterinary School of Dresden, was commissioned to test my 

 results ; but I communicated the result of this first experiment to 

 the scientific public in the November number of Giinsburg's 

 ' Zeitschrift fur KlinischeMedizin' for 1853. By a mistake of the 

 editors, a heading was given to this article from which it appears 

 as if the first experiment was made under the commission of the 

 Saxon Government, whilst the text itself shows that only a sub- 

 sequent commission could be spoken of. The impossibility of 

 immediately obtaining a mature Coenurus cerebralis delayed the 

 making of the experiment at the cost of the Government, and it 

 was only in the middle of November that I procured a Coenurus 

 cerebralis, with which I fed a dog. I killed him on the 9th of 

 January, 1854, and immediately afterwards six lambs in all were 

 fed with the Tanite, both by myself in Drausendorf and by 

 Professor Haubner in Dresden. Of these, five became vertiginous 

 in about eleven days. The experiment has since been repeated 

 so frequently, that this conversion of the brood of Tcenia Coenurus 

 into Coenuri in the brain of the sheep is an ascertained fact. I 

 shall only remark, that vertigo was produced with proglottides of 

 Tcenia Coenurus sent by me in white of egg, in lambs, by Gurlt 

 in Berlin, by Eschricht in Copenhagen, by Van Beneden in 

 Louvain, by Leuckart in Giessen, and by Roll in Vienna, and in 

 young cattle by May in Weishenstephan. The Agricultural 



