EIGHTEENTH ANNUAL REPORT 107 



A Chapman zebra died as a result of an aneurism, and 

 thrombus of the posterior aorta, due to worms. This is the 

 second zebra lost from the same cause, the previous case occur- 

 ring in 1907, in a Grant zebra. 



Cage Paralysis. — The condition recognized as cage paralysis 

 occurs principally among the smaller monkeys. This disease 

 generaly assumes a chronic form and the animals are chloro- 

 formed before they enter upon the final stages of the affection, 

 and as soon as they become no longer fit for exhibition purposes. 



Actinomycosis. — No prong-horned antelopes have been 

 brought to the Park during the year; consequently no cases of 

 actinomycosis, or lumpy jaw, are to be recorded. 



Distemper. — There were no cases of this disease among the 

 animals during the year. 



Rickets is not uncommon, especially among the small 

 mammals, such as the opossum, raccoon, porcupine, armadillo, 

 and ocelot; and when the disease assumes a chronic character, 

 they soon become unfit for exhibition, and are consequently 

 destroyed. 



The large male giraffe which had been exhibited in the 

 Park for about ten years died from heat apoplexy during the 

 hottest day of the summer, A few months later the female 

 Giraffe died suddenly from acute dilatation of the heart, having 

 been found dead upon the keeper's arrival in the morning. The 

 autopsy revealed an extreme fatty degeneration of the heart, and 

 a parasitic affection of the liver of a chronic nature. 



Several cases of acute nephritis and cystitis occurred among 

 the deer, apparently induced by the exclusive feeding of alfalfa 

 hay ; the symptoms in these cases being the complete suppression 

 of urine, with colicy pains and marked nervous irritability. 

 Mild cases responded to treatment readily, but the more acute 

 cases soon developed an acute toxemia, ending in death. The 

 post-mortem lesions resembled the fungoid poisoning seen in the 

 moss poisoning of caribou. 



There were an unusually large number of animals which 

 met violent deaths as a result of the fighting with cage or corral 

 mates. These deaths occurred in coyotes, foxes, raccoons and 

 fallow deer. A number of animals were destroyed on account of 

 malnutrition and rickets, and as a result of breeding aged moth- 

 ers in the herds of red deer and elk. Several fawns were lost as 



