TROGLODYTES GORILLA 



633 



Tlu' \()iin,u liorilla inuiu(liatt'l\' showed marked (.'inotiDnal reactions 

 whii'h caused some ditlicult roiiiplications in the liouseliold. If lie were left 

 In hiinst'lfat ni!j;ht he would shriek Irom lear and lonehness. Miss Cunning- 



Courlcsy, AmcTiiun Museum oj Natural Hislnry 



fk;. 2(So. six-year-old gorilla, john damll. 



IScc Tf\t p. 632] 



ham tht-relorc- treated him as she would a eiiild, and had her nephew ]>laec 

 his bed e\-er\ ni^lit in the room adioinin<j; the cage of tlie gorilla. As a result, 

 John I)ecanu' c|uitt' haj)p\ , at once l)e<i;an to grow and put on weight. He was 

 next taught to he clean in his habits, and by a series of rewards and punish- 

 ments at the end of six wt'eks was thoroughl\- house-broken. He was then 

 taken out of his cage and allowid the freedom of the house. Thereafter, he 

 ran upstairs to the bathroom of his ow n accord, turning the knob of the door 



