372 CAUL R. MOORE 



less vigorous than those of the normal male. There was never 

 any doubt that the behavior of the animal was typically mascu- 

 line and no single element of its behavior ever suggested feminine 

 instincts. The animal exhibited no interest in young guinea-pigs, 

 even at the time the mammary glands were at the height of their 

 development, and would, indeed, fight them away when they at- 

 tempted to suckle. 



Male 40 A I., born April 29 1918. May 18th, testes removed, two 

 pieces of ovary ingrafted subcutaneously. March 3, 1919, animal 

 killed. 



The ovarian transplantation was successful in this case; the 

 glands were prominent and easily palpated in their position on the 

 ventral abdominal wall. The teats began to be noticeably in- 

 creased in size six weeks or two months following the operation, 

 and by November had reached a size as large as those of a pregnant 

 female near term. 



November 2nd. Teats especially large, size of a suckling female. 

 Young introduced into cage evokes no feminine reactions; attempting 

 to suckle they are avoided or actually repelled by the animal. The 

 male, though castrated and bearing two large ovarian grafts, reacts 

 as a normal male; it follows the mother of the young continuously 

 when she is admitted to the cage. 



November 7th. Female in heat placed in cage evokes typical male 

 reactions from the castrated male; male-sex call and behavior of the 

 animal would lead one to assume at once that the animal was a normal 

 male. 



November 11th. Has remained in a cage with a spayed female 

 for three days, yet upon introduction of a strange female the male 

 reactions are noticeable at once; follows female uttering male sex call. 



November 15th. Mother and young placed in cage; male reactions. 

 Mother removed for three hours, but during her absence there were 

 no indications whatever of a female psychical disposition: no maternal 

 inclinations toward young: avoids young as they attempt to crawl 

 underneath abdomen in search of teats. When mother is replaced 

 the animal follows her immediately, uttering male call. 



November 16th. Young placed in cage five hours, no feminine 

 reactions. Mother placed with young long enough to begin suckling 

 and is quickly removed ; the excited young ones rush to male, attempting 

 to suckle, but are fought away by the male (the mammary glands 

 are at the height of their development). Mother replaced, animal 

 immediately reacts as a typical male. 



