696 



THE PHYSIOLOGY OF REPRODUCTION 



and Sand have been described in an earlier chapter. Sand l has 

 recently demonstrated the effects of simultaneous transplantation 

 of a testis and an ovary in an infantile castrated guinea-pig and 





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the grafting of ovaries into the testes of rats or guinea-pigs, and 

 has shown that hermaphrodites with a decided bisexualism of the 



1 Sand, "Experiments on the Internal Secretion of the Sexual Glands, 

 especially on Experimental Hermaphroditism," Jour, of P/iysiol., vol. liii., 1919. 



