RESULTS OF POST MORTEM EXAMINATION. 469 



sistcd. The other symptoms returned in greater intensity five days 

 later, i.e., nine after the feeding. From that time the fever increased, 

 until, on the seventeenth day, the temperature in the rectum reached 

 41 '8, the appetite also failed, the animal became feeble and declined, 

 lay much, and moved only with difficulty and pain. At last it could 

 hardly move without help, and was attacked by diarrhoea. On the 

 eighteenth day the temperature again began to fall. The animal was 

 quite unable to raise itself, the heart's action became gradually slower, 

 the respiration laboured, and four days later death ensued from failure 

 of the heart's action. 



The results of post mortem examination are essentially the same 

 according to all investigators. The subcuticular connective tissue, in 

 many places, and especially where there are large lymph-glands, is 

 infiltrated by a serous fluid of a briny character. The muscles are of 

 a deep red colour, markedly injected, and in many places also exhibit 

 streaky exudations. They are further of a succulent consistency, and 

 are softened here and there, and penetrated by numerous cysts, 1 

 especially in the tongue, throat, neck, and breast. The heart is no 

 exception to this, but is often even more infested than the other 

 muscles, not only in its walls, but in its papillae and valves, and 

 below the endocardium. The circumference and bulk of the heart 

 are considerably increased. The same is true of the kidneys, and to a 

 less extent also of the liver. The viscera (with the exception of the 

 genitalia) are congested, the peritoneum is reddened, the lymphatics 

 much distended, the glands enlarged, and also to some extent altered 

 by extravasation of blood. The peritoneal and pleural cavities con- 

 tain a serous fluid. The membranes of the brain are very hyperaemic, 

 and the lateral ventricles distended, while the brain substance and the 

 pia mater exhibit a few extravasations. 



The extent of the occurrence and distribution of the bladder- worms 

 in the internal organs varies greatly, and is sometimes only slight, 

 although the peritoneum and lymphatic apparatus are seldom quite 

 free from them. The kidneys, lungs, and liver contain on the whole 

 but few. Hosier saw some bladder-worms in the muscular layer of 

 the intestine, Perroncito 2 in the brain, and van Beneden in the sub- 

 cuticular connective tissue, and one example even in the vitreous body 

 of the eye, which lay in the centre of a bloody granular mass, some 

 millimetres in front of the retina. 



The pathological changes which we have described vary, of course, 



1 Van Beneden finds in these cysts, besides the granules and granular cells which I 

 mentioned, numerous free blood corpuscles. 



2 " Esperimenti sulla produzione del Cysticercus della Taenia mediocanellata," p. 11 : 

 Torino, 1877. 



