190 ENTOZOA FOUND IN MAN. 



the brain and its membranes, in the lung, and in the 

 eye ; it is also sometimes found in a serous cavity, 

 when its cyst may be absent. 



The cysticerci occasionally exist in very large 

 numbers, and they then give rise to serious morbid 

 phenomena. In other instances, they may not pro- 

 duce any special pathological symptoms, unless they 

 are developed in the nervous centres, in the eye, or 

 in the larynx ; and if we except those cases in 

 which their presence may be ascertained by direct 

 inspection (as when they are situated beneath the 

 tongue, or in the eye) there are no fully reliable signs 

 of their existence. 



The circumstances which determine, and even 

 those which are favourable to, the development of 

 the cysticerci are still unknown ; it it probable, how- 

 ever, that they depend, to a certain extent, upon the 

 manner of hving of the affected individual. 



The animals in wliich the presence of the cysti- 

 cercus telse cellulosse has been ascertained, besides 

 Man, are the pig, the dog, the monkey, the bear, the 

 goat, and the rat. The pig is more subject than any 

 other animal to the attacks of this entozoon, which 

 produces the unhealthy state of the flesh usually 

 spoken of as " measled," or '* measly" pork in this 

 country; this disease is known under the name 

 of "Ladrerie" in France, where it is exceedingly 

 common. This affection of the porcine tribe is very 

 widely spread, and has been observed not only in 

 Europe, but also in America.^ 



^ In a paper read before the Eoyal Dublin Society, at the 

 December meeting, 3862, upon the Prevalence and Prevention of 

 Diseases amongst Domestic Animals, Professor Gamgee, of the 



