698 



THE PHYSIOLOGY OF REPRODUCTION 



hermaphrodites, and thus shown that, contrary to Steinach's con- 

 clusions, the gonads do not necessarily act antagonistically. The 

 individuals with the grafts, however, possessed the psychical 



FIG. 172. Feminised (originally male) guinea-pig with large 

 protruding teats and small penis. (From Steinach.) 



FIG. 173. Normal male guinea-pig with rudimentary 

 teats and large penis. (From Steinach.) 



characteristics of the determined or original sex ; thus, while males 

 with ovarian grafts showed great development of the mammae, 

 the psychical characters were male. With individuals previously 

 castrated the grafts produced a reversal of psychical characters. 



