MENTAL LIFE OF APES AND MONKEYS 267 



he had for a time under observation, would use a hammer to 

 drive nails with, string beads on a cord, select the proper 

 key from a bunch and unlock a padlock, and strike a match, 

 light a cigarette, and smoke it with an expression of serene 

 contentment. Peter developed a remarkable expertness 

 in riding a bicycle, a feat which he was accustomed to per- 

 form during his public exhibitions. 



Mr. Belt tells of a Cebus he observed which would use a 

 stick with which to draw objects toward him. One day 

 some bird skins were placed, as was thought, far beyond his 

 reach, but he took his swing and used it so as to bring the 

 skins near enough to be seized. He also secured some 

 jelly, which was set out to cool, in the same way. 



Miss Romanes in her account of the behavior of a Cebus, 

 from which we have already quoted, states that "if a nut 

 or any object he wishes to get hold of is beyond the reach of 

 his chain, he puts out a stick to draw it toward him, or if that 

 does not succeed, he stands upright and throws a shawl back 

 over his head, holding it by the two corners so that it falls 

 down his back; he throws it forward with all his strength, still 

 holding on by the corners; thus it goes out far in front of him 

 and covers the nut, which he then draws toward him by 

 pulling in the shawl." The same monkey when given a 

 hammer to crack a nut with used it effectively for that 

 purpose. We have the testimony of Cuvier to the effect 

 that an orang would pull a chair from one end of the room 

 to the other so that by standing upon it he could open a 

 latch, but how the act was originally learned we are not 

 informed. 



The use of sticks and stones by apes and monkeys has 

 been described by several writers. Pechuel-Losche, who has 

 had excellent opportunities for observing baboons in their 

 native habitat, has come to the conclusion that the accounts 



