050 FREDERICK S. HAMMETT 



than any other single tissue so far studied is continuously dependent upon 

 the reception of hormonal stimulation for its successful functioning. 

 During its entire history, from early growth and development through 

 the periods of the taking on of its specific function of lactation, and even 

 to the postclimacteric atrophy, it receives and responds to hormonal 

 stimuli, and if they are lacking its activity is curtailed. 



Such biological relationship between pre- and postnatal nutrition, 

 depending as it does upon the adequate and proper functioning of the 

 generative glands, hardly seems to uphold the idea that the mammary 

 glands have no primary relationship with the organs of generation. Influ- 

 enced and directed as they are by the internal secretions from the gen- 

 erative glands, there must exist a deeper and more fundamental relation- 

 ship to these than that of mere adveiititiousness or species characteristics. 



