APES IN CAPTIVITY 



267 



way. Neither the pool nor the house should be kept 

 at a uniform heat, but allowed to vary from 60 to 

 90 degrees. 



In addition to the things mentioned, the place 

 should be provided with the means of giving it a 

 spray of tepid water, which should be turned on 

 once or twice a day, and allowed to continue for at 

 least an hour at a time. The water for this purpose 

 should be taken from the pool, but should never be 

 warmer than the usual temperature of tropical rain. 

 The animal should not be required to take a bath 

 in this way, but should be left to his own choice 

 about it. 



The house should be separated by a thin partition 

 that could be removed at will, and the other end of 

 the building from the pool should be occupied by 

 a strong tree, either dead or alive, to afford the 

 inmates proper exercise. The rule that visitors or 

 strangers should not annoy or tease them should 

 be enforced without respect to person, time, or rank. 

 No visitor should be allowed on any terms to give 

 them any kind of food. The reasons for these 

 precautions are obvious to any one familiar with 

 the keeping of animals, but in the case of a gorilla 

 their observance cannot be waived with impunity. 



The south side of the house should be of glass, 

 and at least half of the top should be of the same. 

 These parts should be provided with heavy canvas 

 curtains, to be drawn over them so as to adjust or 

 regulate the sunlight. In summer-time the building 

 should be kept quite open so as to admit air and 



