310 G. V. HAMILTON 



the adjacent cage approached. A reported case of masturbation 

 by this animal proved to be mere reflex scratching of the genitalia, 

 which were irritated by partially dried menstrual discharge. 

 Kate would assume the sexual position whenever I approached 

 her cage, and when a ranch hand voided urine in her presence 

 she displayed marked sexual excitement, smacking her lips and 

 croaking invitingly. 



Observation 21. 5-Maud-M-r, after a week of isolation 

 behaved in essentially the same manner as did Kate in observa- 

 tion 20. 



Situation 14. Male, threatened by larger male and unable to 

 escape. 



Observation 22. When 12-Sandy-Papio — (mature) was first 

 admitted to the alley band, of which 24-Mutt-M-cr (immature) 

 was a member, all of the band excepting Grace fled. Sandy, it 

 will be remembered, is a very large baboon, and Mutt is an 

 immature rhesus, hence very tiny in comparison with Sandy. 

 When the band scattered on the approach of the baboon, Mutt 

 darted into a cage and crouched in a corner, on the floor. Sandy 

 followed him, leering at him threateningly. Mutt squealed in 

 terror, and looked about him as if seeking an avenue of escape. 

 Finding none, he assumed the female sexual position, but as Sandy 

 approached, now displaying only friendliness and sexual excite- 

 ment, the little monkey darted between his legs and escaped. 



Observation 23. 28-Scotty-M — occupied a cage adjacent to 

 that occupied by 10-Timmy-M-c. Scotty is sexually mature, 

 but not yet of adult size. He is very timid and Timmy is a 

 savage adult. Timmy forced the netting partition loose and 

 entered Scotty's cage. Scotty fled in terror, shrieking and 

 gnashing his teeth. When Timmy finally caught him and began 

 to bite him Scotty assumed the female sexual position, thereby 

 effecting a temporary escape, since this diverted Timmy suf- 

 ficiently to enable his victim to dart past him. 



Situation 15. Female threatened by larger female and unable 

 to escape. 



Observation 24. 11-Grace-Papio — and 9-Gertie-M-cr (both 

 sexually mature) were brought together in the alley. Grace at 

 once attacked Gertie and began to bite her. Gertie assumed the 

 sexual position, and was mounted by the larger female. Grace 

 manifested no sexual excitement, and made no copulatory move- 



