56 ^'K^v york zoological society. 



his odd charge across the Atlantic in midwinter, and landing it 

 in perfect health. There is good reason to expect that this pair of 

 rhinoceroses will eventually breed here. 



During the summer of 1906, our female rhinoceros developed 

 a swelling in the muscle of its left lower jaw, which eventuall} 

 became so obstinate and troublesome that a severe operation 

 was necessary to open the affected part quite to the bottom. The 

 operation was entirely successful, and did not in any way affect 

 the health of the animal. In January, 1907, the drainage opening 

 closed naturally, and the whole affected part is now healed. 



A fine young male hippopotamus, now three years old, was pur- 

 chased of the Park Department of the Borough of Manhattan, 

 and safely installed temporarily in the Antelope House, wherein 

 a pool had been provided to meet just such a contingency. This 

 very desirable specimen is the gift of Mr. Samuel Thorne, and its 

 arrival is most opportune. With the addition of a pair of young 

 East African elephants, which will be delivered during the coming 

 spring, the collection of animals for the Elephant House will be 

 quite assured. 



The flock of five white mountain goats, procured in British 

 Columbia, in October, 1905, remains intact, and in perfect health. 

 All of these animals are growing about as rapidly and satisfac- 

 torilv as wild animals of the same age. and unless the low altitude, 

 and the dense, salty air of Xew York eventually causes a prema- 

 ture physical breakdown, they soon will be sufficiently mature to 

 breed. The buffalo herd, the European bison, the elk herd and all 

 the Asiatic and tropical deer are, without exception, in fine condi- 

 tion. The Asiatic deer are breeding so rapidly as to cause some 

 embarrassment, for it is difficult to sell the increase as rapidly as it 

 is produced. The following is a list of the most important births 

 in the AFammal Department during the year: 



MAMMALS BORN IX I906. 



