918 



DISEASES OF SHEEP. 



In forty-one of 

 Prof. Gamgee's exper- 

 iments, fifty dogs were 

 employed, and these 

 were fed on the ccenuri 

 from the brains of 

 sheep, thirty-three be- 

 coming, affected with 

 tape-worm. From one 

 cyst alone 400 tape- 

 worms were devel- 

 oped, and from a fourth 

 part of one cyst 191 of 

 these creatures were 

 produced, the time oc- 

 cupied being less than 

 a fortnight, when they 

 were about one tenth 

 of an inch in length ; , 



they were one inch long the third week, and four inches long by the 

 end of the fourth week. Those remaining at the end of five m onths 

 reached the length of 24 to 30 inches. After three to five months 

 the joints were detached singly, and, finding their way with the 

 feces to the ground, reached the stomach of the sheep, where they 

 recommenced their havoc. 



Pig. 1215.— Ccenurus (Hydatid) ol the Sheep. 



a, Brain of a sheep invested for three, weeks with the egpr 

 of the hydatid, the sheep finally dying of turnsick; b, Isolated 

 passage formed by the worm on the surface of the brain.; 

 c, Vesicle before the birth of the scolex (or head) ; d, Vesicle 

 in which the scolex appears; e, Vesicle which has engendered 

 the scolex. 



'V, 



