CYSTICERCUS TENUICOLLIS. 185 



administration of the eggs. If tlie embryos had migrated here, 

 they had been aborted and destroyed immediately after irri- 

 tation of the brain took place. The second lamb had only a 

 single developed Cystic, tenuicollis. 



At the same time the observation was made, that in the fold 

 in which these lambs were left without isolation, several lambs 

 became sickly, and contained Cysticerci in the mesentery, although 

 these vesicles had not previously been observed in this fold. 



Professor Luschka informs me that after administering the 

 eggs of one Tcenia to a young he-goat he found a Cystic, tenui- 

 collis, and Professors Leuckart and Roll have also affirmed 

 that in many experiments upon sheep and goats, which they fed 

 with eggs of Tcenia ex Cysticerco tenuicolli sent them by me, 

 Cysticerci tenuicolles had been bred. The most convincing expe- 

 riments must be the two following, instituted by me (vide ' Ueber 

 die Tcenia ex Cysticerco tenuicolli,' &c, Moleschott's 'Unter- 

 suchungen/ Bd. i, p. 352) : On the 9th of April, 1855, two sucking 

 lambs of 28 — 30 and 20 — 22 days old, which had never been on 

 the meadow, received mature segments of the Tcenia ex Cysticerco 

 tenuicolli. In April and May they sickened, and lost their appe- 

 tite and vivacity. The stronger and older sheep soon recovered ; 

 the younger and weaker one became violently affected with peri- 

 tonitis, but j r et recovered so far in June as to be able to stand 

 up, move about, and seek its mother in order to suck. At the 

 end of May an umbilical abscess opened in the animal, and from 

 this period its recovery advanced rapidly. On the 1st — 8th 

 June, a shepherd's preservative against the staggers was admi- 

 nistered to the lambs, and afterwards, on the 9th and 10th of 

 June, they received Tcenia Coenurus. On the 23d of June the 

 stronger sheep showed indications of vertigo, and on the 25th the 

 weaker one. When the animals were dissected, on the 26th of 

 June, the ordinary appearances after the administration of Tcenia 

 Coenurus were met with, and also immense numbers of Cysticercus 

 tenuicollis, corresponding with the time (seventy-nine days) after 

 the administration of the Tcenia ex Cyst, tenuicolli. The pheno- 

 mena were exhibited in the greatest intensity in the younger 

 lamb, which presented more Cysticerci than the older one, espe- 

 cially on the convex surface of the liver, on the side wall of the 

 ductus choledochus, on the mesentery, and on the spot where the 

 base of the uterus, the arch of the vagina, the rectum, and the 

 bladder lay; and also in the pleura, the pericardium, and the 



