88 GLANDS IN HEALTH AND DISEASE 



divided, the cortex and the medulla, the former, if 

 anything, seems to be more essential to life than 

 the latter, though so far no one has succeeded in 

 showing that the cortex contains any specific hor- 

 mone. On the other hand, the medulla contains the 

 best known of all the hormones, adrenaline. This 

 hormone, adrenaline, has not only been isolated in 

 the pure state, but it has actually been synthesized 

 in the laboratory. Adrenaline has already taken 

 its place among the most valuable drugs in medi- 

 cine. 



