EIGHTH ANNUAL REPORT. Ill 



CARDIO-VESICULAR SYSTEM. 



Myocarditis is doubtless the most important disease of this 

 system arising among our animals ; the general conditions induc- 

 ing it were discussed in last year's reports under "Effects of Cap- 

 tivity on Wild Animals." Needless to say this serious condition 

 has been present in all of the elk of the old herd which have come 

 to autopsy. One mule deer died from a fibrinous pericarditis. 



RESPIRATORY SYSTEM. 



The only cases that come under this heading have already been 

 discussed under tuberculosis, pneumonia, and as concerning the 

 bronchial filaria. 



DIGESTIVE SYSTEM. 



The important diseases of this tract have already been consid- 

 ered under gastro-enteritis and, in a previous communication, 

 under fatty degeneration of the liver. Three fatal cases of fish 

 poisoning occurred among the sea lions ; one of this same group 

 of cases recovered. 



SPLEEN AND LYMPHATIC SYSTEM. 



Only secondary lesions have been found in these organs, mostly 

 tuberculosis and simple hyperplastic lymph-adenitis of inflamma- 

 tory origin. 



GENITO-URINARY SYSTEM. 



But two cases of primary nephritis have been discovered this 

 year, one occurring in a caribou and one in an ocelot. Both cases 

 showed the lesions of acute exudative nephritis. 



Two cases of post-partum sepsis have already been considered. 

 One case of cystitis of unknown origin, terminating in rupture 

 of the bladder, was found in a small rodent. 



MALNUTRITION. 



Eight post-mortem examinations have shown no definite lesions 

 other than such as might be most conveniently classified under the 

 heading of malnutrition. Two cases have died as the direct re- 

 sult of general visceral fatty degeneration, probably due to over- 

 nourishment and under-exercise. 



