298 G. V. HAMILTON 



Monkey 3. Kate. M. rhesus. Adult. Mother of Monkey 9. 



Monkey 4. Pat. M. rhesus. Adult. Vision defective. • 



Monkey 5. Maud. M. rhesus. Young adult. 



Monkey 6. Jocko. M. cynomolgus. Adult. 



Monkey 7. Becky. M. rhesus. Adult. Mother of Monkeys 

 13 and 24. 



Monkey 8. Jimmy I. M. cynomolgus. Adult. 



Monkey 9. Gertie. M. cynomolgus-rhesus. Age, 3 years, 2 

 months. Daughter of monkeys 3 and 10. First pregnancy 

 began September, 1913. 



Monkey 10. Timmy. M. cynomolgus. Adult. Father of 

 Monkeys 9, 13 and 24. 



Baboon 11. Grace. Papio — . Adult. A small black bab- 

 oon, about 1-3 larger than an adult female M. rhesus. Tail 

 absent, other anatomical features similar to those of typical 

 members of genus Papio. Became pregnant when bred to 

 male baboon (Monkey 12) but frequent previous copulation 

 with male macaques was without result. 



Baboon 12. Sandy. Papio — . Adult. Fur black over back 

 and forehead, grey elsewhere. " Pig " tail, long muzzle. 

 Legs and body much shorter and thicker and those of the 

 chacma. A very powerful animal, almost equal to the chac- 

 ma in weight. 



Monkey 13. Tiny. M. cynomolgus-rhesus. Age, 5 months. 

 Daughter of Monkeys 7 and 10. 



Monkey 14. Jimmy II. M. cynomolgus. Young adult. 



Monkey 16. Sobke. M. rhesus. Young adult. 



Monkey 18. Baby. M. cynomolgus. About 1-2 adult size. 

 Castrated before sexual maturity. 



Monkey 20. Chatters. M. cynomolgus. About 3-4 adult 

 size. Castrated before sexual maturity. 



Monkey 22. Daddy. M. cynomolgus. Adult. Castrated — 

 date unknown. 



Monkey 26. Skirrel. M. cynomolgus. Adult. 



Monkey 28. Scotty. M — . Young adult. Probably be- 

 longs to the cynomolgus group. 



II. ENVIRONMENTAL CONDITIONS 



My laboratory is in the midst of a live oak woods in Montecito, 

 California, about five miles from Santa Barbara. Like all of 



