THE ELEMENTS OF MIND 227 



out of his stomach, and soon grew very weak and 

 emaciated from the constant loss of food, which 

 leaked out through this tube. After a time, how- 

 ever, the dog was observed to be growing unac- 

 countably hale and strong. He was watched, and 

 the poor creature was found to have struck upon 

 an ingenious expedient to save his life. On eating 

 his meal, he would go out to the barn, and, in 

 order to prevent the artificial escape of the con- 

 tents of his stomach, would lie down flat on his 

 back between two boxes and remain there until 

 his digested food had passed safely beyond the 

 pylorus. 



A few months ago, John, one of the monkeys 

 at Lincoln Park, Chicago, was suffering from a 

 terrible abscess on the cheek, and an operation 

 became necessary in order to save the little fellow's 

 life. It was a pathetic sight to see the look of 

 trust in the monkey's eyes when the surgeon was 

 ready to begin the operation, and the courage and 

 fortitude displayed by the sufferer were almost 

 human. At the first touch of the knife the monkey 

 pressed his head hard against the knee of the 

 assistant and grabbed the forefinger of each of the 

 assistant's hands, just as a person does who is 

 about to undergo a painful operation. The swell- 

 ing was first cut open and washed with antiseptic, 

 when the cheek-bone was scraped and a small 

 piece of it removed. After being again washed 

 in antiseptic, the wound was sewed up, and John 

 was lifted gently back into his cage not, however, 

 until he had licked the hands of the surgeon and 



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