GENETIC TYPE AND THE ENDOCRINES 723 



ministration, but the level was raised above that prevailing 

 during the time after hypophysectomy. The third dog, which 

 had only the posterior lobe removed, showed C-R values 

 (efficiency and magnitude) typical for normal dogs. 



THE INFLUENCE OF THE SUPEAEENALS UPON THE 

 BEHAVIOEAL EEACTIONS 



THE EFFECT OF ADMINISTRATION OF ADRENALIN ON BEHAVIOR 

 IN THE NORMAL DOG 



Dog 86S $ , bassethound X Saluki F 2 . The effect of a single 

 massive dose of adrenalin upon the motor C-R was observed 

 in this dog. The animal's training period has already been 

 described. 



Control tests of the positive response alone were carried 

 out, the negative differential stimulus being omitted. Adrena- 

 lin, 1 cc. of 1 :1000 solution, was given intravenously. The 

 same positive response tests were resumed a few minutes 

 after the injection. 



The C-R showed an increase shortly after the injection, 

 but this was followed by a marked decrease. As the values 

 decreased it was noticed that the dog became somewhat rest- 

 less and nervous, as shown by an increase in the amount of 

 spontaneous movement of the reaction leg in the intervals 

 between stimuli. The effect disappeared 4% hours after the 

 injection. Statistical treatment of the results failed to show 

 this, since the effect is diphasic and the increase masks the 

 decrease in the averages. However, for the purposes of 

 comparison with preceding tabulations, the results are given 

 in table 23. 



TABLE 23 

 Dog 868 <$ 



