DISTANCE CEPTORS EMOTIONS 147 



dustrial workers and homekeepers, which are necessary 

 adjuncts in time of peace, but excess baggage in time 

 of trouble, and hence, at such a time, are deprived of 

 their energy, for the sake of contributing extra effi- 

 ciency to the fighting apparatus. 



Our experiments show that when normal rabbits 

 are subjected to intense fear from the threatened attack 

 of a dog, the dog being muzzled and not allowed to 

 attack or to chase them, the blood in the vena cava of 

 each rabbit, taken from just above the entrance into 

 it of the adrenal vein will show an increased adrenin 

 content. 



These observations are in accordance with the find- 

 ings of Cannon and others, who have shown that 

 adrenin is increased, and the sugar output from the 

 liver correspondingly augmented by rage and fear in 

 cats. (Fig. 20.) On the other hand, no increase of 

 adrenin was found by us in cats which were frightened 

 three months after the splanchnic nerves to the adrenals 

 had been divided. 



There is abundant clinical evidence to supplement 

 and confirm this laboratory evidence of the connection 

 between the adrenals and distance ceptor stimulation. 

 This evidence is based upon the fact that adrenin 

 causes an increase in the sugar content of both the 

 blood and the urine. Clinicians have long known 

 that emotional excitation causes glycosuria. In cases 

 of diabetes, the sugar content is increased in the urine 

 by emotion. Sugar is frequently found in the urine 

 of patients undergoing psychic stress, the glycosuria 

 disappearing after repose. This is in striking contrast 

 to the fact that sugar is rarely found in the urine of 



