THE SPEECH OF MONKEYS. 95 



with much less energy. It resembles slightly 

 the alarm-sound of the Capuchin, but up to this 

 time I have not been able to make a good record 

 of it. 



Another sound which- is peculiar to this species, 

 I think, is used as a kind of salutation or expres- 

 sion of friendship, which phonetically is quite 

 unlike the corresponding sound in any other dia- 

 lect that I have studied. 



I must mention Dolly Varden, who belongs to 

 this species and with whom I was at one time 

 on very warm terms of friendship. Dolly was 

 very fond of me and would laugh and play with 

 me by the hour. Her laughter was very human- 

 like, except that it was silent, and in all our play 

 during the lapse of some weeks she never ut- 

 tered a sound — not even so much as a growl, al- 

 though I tried by every possible means to in- 

 duce her to talk. It has occurred to me since 

 that time that she may have been deaf and dumb, 

 but I did not think of testing her on these points 

 while I had an opportunity. It is not usual for 

 monkeys to laugh in silence, although they fre- 

 quently laugh aloud like human beings ; but it is 

 not a common thing for them to remain silent at 

 all times and under all conditions. Dolly was 



