738 



O. D. ANDERSON 



As shown by table 31, the efficiency of the response re- 

 mained quite unaffected (100 per cent to 100 per cent). The 

 average magnitude, on the other hand, dropped more than 

 100 per cent (9 to 4). No other behavioral changes were 

 noticed. The dog suffered absolutely no loss of appetite 

 in the laboratory or in the kennel, and he was no more 

 phlegmatic after the castration than before. 



TABLE 31 

 Dog 1150,$ 



THE EFFECT OF OVARIECTOMY 



Dog C-49 , bassethound X shepherd F 3 . The salivary C-R 

 was used, the stimuli being Met. 120 (positive) and Met. 28 

 (negative). The dog was trained for 6 months before the 

 operation. In general, the behavior in the kennel and in the 

 laboratory was that of any quiet, obedient dog. She was 

 normally alert and active in the runs and readily defended 

 her pan of food from the encroachment of her companion 

 dog. The C-R was formed in six trials and regularly appeared 

 afterward. 



The dog was ovariectomized when fully grown, at the age 

 of 1-year and 2 months. The C-R tests were continued for 

 1-year and 3 months afterward. The effects upon the C-R 

 were slight. Behavior reactions in general became slightly 

 phlegmatic. 



TABLE 32 

 Dog C-4% 



