Essays on the 

 Internal Secretions 



1920 



Comprising the Winning Contributions, 

 with Some Others, to the First 

 "Harrower Prize Essay Contest." 



Edited by 



HENRY R. HARROWER, M. D., F. R. S. M. (Lond.) 



1921 

 THE HARROWER LABORATORY 



Glendale, California 



