984 THE INTERNAL SECRETIONS 



same species produced a pseudo-hermaphrodite, which presented primi- 

 tive male generative organs and female secondary characteristics. 

 In conclusion, it may therefore be stated that the internal secretion 

 of the male generative gland is furnished by the interstitial cells of 

 Leydig. Enclosed in the cytoplasm of these cells we find granules 

 and peculiar crystals which impart to them the appearance of true 

 secretory elements. These bodies may be the precursers of this 

 internal product. 



