544 



THE CENTURY MAGAZINE 



still, but with a great light of happiness in 

 Ker face. "There is no Captain Wyn- 

 ford," she sobbed. "If you had looked in 

 the locket — " A laugh flashed in her eyes. 

 And then he understood. 



They were standing close together in 

 the muUioned window where three hun- 

 dred years before a man standing on the 

 lawn outside had scrawled with a diamond 

 on one of the little panes: 



If woman seen thro' crystal did appere 

 One half so loving as her face is fair 



And a woman standing inside had writ- 

 ten the answering lines : 



Were woman seen thro', as the crystal pane, 

 Then some might ask, nor long time ask 

 in 



The rhyme word was indicated by a 

 dash, but neither the tracings of those dead 

 hands, nor the ancient lawns, nor the oaks 

 that had been witness, did these two see. 

 When many things had been said, she 

 opened the locket. 



"You must look now." 



"I will," he said. As he looked, his 

 eyes grew misty. "Both of us?" he whis- 

 pered. 



"Both of you!" she answered. And it 

 was so, for in the corner of the picture was 

 Penwiper. 



IMITATION IN MONKEYS 



BY MELVIN E.HAGGERTY 



WITH PICTURES OF MONKEYS FROM PHOTOGRAPHS MADE BY MR. E. R. SANBORN, 

 STAFF PHOTOGRAPHER OF THE NEW YORK ZOOLOGICAL PARK 



POPULAR literature abounds in stories 

 of the imitative tendency of monkeys. 

 Doubt as to the scientific truthfulness of 

 such anecdotes was raised by Professor 

 Thorndike's experiments, which failed to 

 reveal any imitative ability on the part of 

 the three monkeys which he studied. His 

 work, and that of succeeding investigators, 

 has been set forth in a recent article ^ by 

 Professor Robert M. Yerkes, and need not 

 be repeated here. It is sufficient to note 

 that experimental evidence, as produced by 

 Thorndike, Kinnaman, Hobhouse, and 

 Watson, has been of a conflicting nature. 

 It leaves the question still unsettled, and 

 strongly suggests the need for further in- 

 vestigation. Within the past year the wri- 

 ter has conducted a series of experiments 

 the aim of which was to further the solu- 

 tion of the imitation question. Specifically, 

 the aim has been to discover if monkeys 

 learn to do things by seeing other monkeys 

 do them. 



My work began in the psychological 

 laboratory of Harvard University in 1908. 



1 See " Imitation among Animals," by 



Jack and Jill arrived in Cambridge one 

 November day, and took up their abode 

 in the animal room of the laboratory. 

 They had been purchased in New York, 

 and all concerned were delighted to find 

 them fine specimens of Cebus monkeys, 

 apparently about three years old. This is 

 the genus with which we are all familiar 

 as consorts of organ-grinders. 



Jill was happy from the start, and on 

 the third day would sit on my knee and 

 eat her banana out of my hand. Within 

 a short time she would ride on my shoul- 

 der as I walked about the laboratory, thus 

 being sure to keep near whatever food I 

 might have in my hand. Jack, however, 

 was more cautious, never coming near un- 

 less Jill was preceding him, and retreating 

 w^henever he got his food. His favorite 

 position was sitting on the floor of the 

 cage, with Jill sitting in front, and his 

 arms clasped tightly about Jill's body. 

 When Jill moved. Jack would start ner- 

 vously and try to keep close to her, never 

 once taking his sparkling brown eyes ofi 



Professor Yerkes in the July Century. 



