THE DEVELOPMENT OF A YOUNG MONKEY 117 



July i j. 12.00 N. The baby is stronger and holds to Dolly 

 without slipping. He holds up his head more steadily and gazes 

 about for half a minute at a time. He is much troubled by a 

 cold. We offered Dolly bread and milk and when she took it, 

 Jim, wanting it all, attacked her savagely. She did not fight 

 back as usual but screamed and fled to the shelf. She seems 

 weak today, rests the baby on the ground instead of holding 

 him upright, for much of the time, and leans, herself, against 

 the incline to the shelf. As she sits ordinarily her body offers 

 a perfect protection for the baby. Her thighs protect his sides 

 and her body is bent forward to form a roof, so that only the 

 top of his head is exposed. She usually turns her back to the 

 observer, keeping the baby hidden and glancing back over her 

 shoulder. 



My moving hand caught the baby's attention today. He 

 opened his eyes wider and turned toward it. Later he turned 

 his head to follow movements and, when his head was confined by 

 Dolly's.arm, turned his eyes. He does not yet attend to sounds, 

 but this is not surprising on account of the constant racket made 

 by terns confined in an adjoining yard. 



7.00 P. M. The young one is lying on his back, his hind feet 

 grasping the hair of Dolly's sides. He moves his hands about 

 in an aimless way, grasping at her face. His movements are 

 weak and inaccurate. Dolly licked his face for a few seconds. 

 This is the only sign of cleaning that has been observed. 2 



Frequently in her flea hunting she is too rough and the baby 

 cries. His cry has changed to a shrill chattering, "Chirk-chirk- 

 chirk." 



7.30 P. M. The monkeys are preparing for the night. Jim 

 stretched out on the shelf and when Dolly edged over to him 

 he drove her down to the ground. He has been growling at 

 her all day. 



July 14. It rained all afternoon and Dolly would not leave 

 the shelf. Both she and the baby remained almost motionless 

 all afternoon. 



July ifj. The baby is much more active today and spends 

 much of the time looking around. He rides with his head 

 turned away from Dolly. He shows especial interest in Jim, 



2 From later observations it appears that this is only a method of catching fleas. 

 Dolly has never attempted to wash or clean the baby. 



