Relation of Higher x\nimals to Man 567 



offended him; he unscrewed a hearth-brush handle, and after 

 considerable manipulation of both ends again screwed it on; he 

 beat people with a cane, or failing beat the floor by proxy; he 

 inserted a trunk key into a lock and turned it; he shook hands 

 with family friends; he poked sticks into the fire, withdrew them 

 and smelt the smoking end; he opened and shut folding window 

 shutters. So the author concludes with an encomium on its 

 "tireless spirit of investigation," by saying "the hours and 

 hours of patient industry which this poor monkey has spent in 

 ascertaining all that his monkey intelligence could of the sundry 

 unfamiliar objects that fell into his hands [ital. writer], might 

 well read a lesson in carefulness to many a hasty observer." 

 Holmes' chapter on "The Mental Life of Apes and Monkeys" 

 amplifies the above description (183: 260). 



But since Romanes wrote this the chimpanzee has been 

 "humanized" in some historic specimens. Thus "Edgar," 

 "Coco," "Esau," "Sally," "Master Link," and "Peter" have 

 been placed freely amongst men, have walked with them, lived 

 in most cases with them, and conformed to their customs in 

 the street, at home, at table, and during sleep. Master Link, 

 brought by a ship captain from Africa to New York, and sold 

 after tliree years to a gentleman there, was reared by him as 

 one of the family. After six months he behaved perfectly, 

 and never once put his hand to the ground. Were one to trace 

 and catalog his actions, they would greatly excel those given 

 for the Capuchin, and in contrast were of an agreeable and 

 kindly turn. 



Now, if it be asked by what cause has the brain of the Capu- 

 chin excelled that of the lemur, or the brain of the chimpanzee 

 that of the Capuchin, one answer seems alone satisfactory and 

 explanatory. In each case environal contact has been effected 

 to an exceptional degree through the hand-arms, and particu- 

 larly so for the two last. These, guided mainly by the eyes as 

 sense-correlators, have converted kinetic into i)roenvironal 

 energy that has brought each species into contact with an in- 

 creasing variety of objects. Stimulated by these objects, 

 afferent impulses have passed into the brain as stereoenergetic 



