80 



DISEASES OE MUSCLES AND TENDONS. 



simply to oxen swallowing eggs or embryos of the unarmed taenia, a 

 fact which explains the frequency of the disease in places where the 



Fig. 39. — Anatomy of the Cysticercus cellulose (after Robin). A, Cyst ; 

 B, scolex with hooks ; C, hooks ; D, magnil&ed fragment of cyst. 



inhabitants are of nomad habits, and consequently disregard the most 

 elementary rules of public and general hygiene. 



Furthermore, cattle in the Sahara, in Senegal and in the Indies, 



have a very marked habit of eat- 

 ing ordure, and as no attempts are 

 made to prevent it, the risk to these 

 animals is greatly increased. 



As in the pig, the embryos 

 w^hich reach the stomach and intes- 

 tine penetrate into the circulatory 

 system, and are thereby distributed 

 throughout the entire organism. 



The development of the cysti- 

 cercus is complete in forty days, 

 and if swallowed by man in infected 

 meat after this period it again gives 

 rise to the Tceiiia saginata. 



The age of the animals seems of 



less importance than in the case 

 Fig 40 -Section of a beef tongue heavily ^^ ^^^ . ^^^, ^^^ ^^^ ^^^^,^^ 



infested with beet measles, natural size ^ ^ *=• . 



(Stiles, Annual Report U.S.A. Bureau ^ave seen cases of beef measles m 

 of Agriculture, 1901). animals of ten years old. 



