80 THE MINDS AND MANNERS 



could not exist in the cage with him, we gave him a permit to 

 tear them out and save the time of the carpenters. 



Dohong's use of his lever was seen by hundreds of visitors, 

 and one frequent visitor to the Park, Mr. L. A. Camacho, an 

 engineer, was so much impressed that he published in the 

 Scientific American an illustrated account of what he saw. 



For a long period, Dohong had been more or less annoyed 

 by the fact that he could not get his head out between the front 

 bars of his cage, and look around the partition into the home 

 of his next-door neighbor. Very soon after he discovered the 

 use of the lever, he swung his trapeze bar out to the upper 

 corner of his cage, thrust the end of it out between the first bar 

 and the steel column of the partition, and very deftly bent two 

 of the iron bars outward far enough so that he could easily thrust 

 his head outside and have his coveted look. 



One of our later and largest orangs made a specialty of 

 twisting the straw of his bedding into a rope six or seven feet 

 long, then throwing it over his trapeze bar and swinging by it, 

 forward and back. 



Time and space will not permit the enumeration of the 

 various things done by that ape of mechanical mind with his 

 swinging rope and his trapeze, with ropes of straw twisted by 

 himself, with keys, locks, hammer, nails and boxes. Any 

 man who can witness such manifestations as those described 

 above, and deny the existence in the animal of an ability to 

 reason from cause to effect, must be prepared to deny the evi- 

 dence of his own senses. 



The individual variations between orangs, as also between 

 chimpanzees, are great and striking. It may with truth be 

 said that no two individuals of either species are really quite 

 alike in physiognomy, temperament and mental capacity. 

 As subjects for the experimental psychologist, it is difficult to 

 see how any other could be found that would be even a good 

 second in living interest to the great apes. The facts thus 

 far recorded, so I believe, present only a suggestion of the rich 

 results that await the patient scientific investigator. 



