GENETIC TYPE AND THE ENDOCRINES 



737 



The dog showed no loss of appetite in the kennel or in 

 the experiment. When the food was presented following 

 the Met. 120 the dog always ate in a greedy and hungry 

 manner, salivating copiously. 



Except for sexual activities, the animal's behavior in gen- 

 eral differed little from that of the normal dogs. The dog- 

 was considered by several persons, unaware that he was a 

 castrate, to be rather phlegmatic. Evidence of this was es- 

 pecially noticeable in the laboratory, since he frequently 

 "nodded" or slept through many of the intervals between 

 the stimuli. In the kennel he always trotted about in an 

 awkward, clumsy manner, moving his limbs as though they 

 were "weighted." Indeed, the clumsiness of the gait was 

 very suggestive of that of a long-legged young puppy. 



TABLE 30 

 Dog C-6 3 



Correct responses to positive Met. 120 

 Correct responses to negative Met. 28 

 Average magnitude of C-R to positive Met. 



120 



68% 

 2 



85% 

 47% 



Dog 1150$ , bassethound X shepherd F 2 . The salivary C-R 

 was used, the conditioned stimulus being Met. 120. No negative 

 differential stimulus was tried. 



In this animal, the usual procedure in this investigation 

 was employed, that is, behavior was observed before and 

 after the operation. The length of the standardization period 

 was 2 months. The dog was a typical representative of the 

 "mid-group" with respect to general behavioral reactions. 

 He was active, alert, obedient and exceedingly affectionate. 

 The C-R was easily established in twelve trials and was ex- 

 tremely constant and regular afterward. 



Castration was performed when the dog was a fully grown 

 adult, 2 years of age. The C-R was studied for -4 months 

 afterward. The behavior effects were similar to those observed 

 in the preceding experiment with dog C-6. The C-R became 

 definitelv weaker. 



