72 THE SPEECH OF MONKEYS. 



treme joy. She never tired of his company, nor 

 gave any part of her attention to others when he 

 was present. Some children living next door 

 to me found great delight in calling to see Nel- 

 lie, and she always evinced great pleasure at their 

 visits. On these occasions Nellie made it a 

 point to entertain them, and showed herself to 

 the best advantage. When I wished to make a 

 good record of her sounds, and especially of her 

 laughter, I would always bring the little boy to 

 my aid. The boy would conceal himself in the 

 room, and after Nellie would call him a few 

 times he would jump out from his place of con- 

 cealment and surprise her, whereupon she would 

 laugh till she could be heard through the whole 

 house ; and in this manner I secured some of the 

 best records I have ever made of the laughter of 

 a monkey. Then when the boy would conceal 

 himself again, I secured the peculiar sound 

 with which she would try to attract his attention. 

 The sound which she used in calling him or my 

 wife was unlike that which she made for any 

 other purpose ; and while it is difficult to say 

 whether the grammatical value of this sound is 

 that of a noun or of a verb, it is evident that it 

 was used for the special purpose of calling or 



