BEEF MEASLES. ?9 



value. These are confined to rendering it impossible for animals to ingest 

 eggs of the Tcenia solium. 



Cjsticercus disease is rare in the north, centre, and east of France, 

 and in districts ^vhere animals are reared in confinement. It is commoner 

 where pigs are at liberty, such as Limousin, Auvergne, and Perigord. It 

 is frequent in North German}-, where the custom of eating half-cooked 

 meat contributes to the propagation of T(enia solium. It is also frequent 

 it Italy. 



BEEF MEASLES. 



Causation. The disease of beef measles is due to the penetration 



Fig. 38. — Cysticerctis celhdosce in pork, c, Cysts; v, fibrous 

 tissue capsule which forms around the cyst. 



into the connective and muscular tissues of embryos of the Tcenia sagi- 

 nata, or unarmed taenia of man. 



This disease, unlike that of the pig, has only been recognised 

 within comparatively recent times, and only after Weisse's experiments 

 (St. Petersburg, 1841) on feeding with raw flesh was attention drawn to 

 it, although as early as 1782 the Tcenia saginata had been described by 

 Goeze. 



Measles in the ox is rarely seen in France, but is common in North 

 and East Africa. Alix has found it in Tunis, Dupuys and Monod in 

 Senegal, and it is common in the south of Algeria. The disease is due 



