GLANDS IN HEALTH AND DISEASE 



vigorate a tree? He cuts off the dead and dying 

 branches and immediately new ones are thrown out 

 by nature. 



"An illustration may be had in common surgery. 

 When it becomes necessary to sever an artery the 

 surgeon ties it off. Very shortly the checked cir- 

 culation would cause serious trouble. But nature 

 takes care of that.- The moment the artery is tied 

 off little shoots spring out from the walls of both 

 ends of the main artery, growing rapidly until they 

 unite around the useless part and the artery is 

 whole again. 



"It is just that way with the gland tied off by 

 Steinach. A new one grows, and, being new, is far 

 better than any attempted rejuvenation of the old, 

 dying one." 



We may summarize the work both of Professor 

 Steinach and of Dr. Voronoff by saying that while 

 experiments on animals have yielded results that 

 are of great value and that are extremely sugges- 

 tive, those carried out on human beings have been 

 altogether too few to warrant any hasty generaliza- 

 tions. We are far, perhaps very far, from the time 

 when the mere grafting of one of the ductless 

 glands will cause old age with all its concomitant 

 horrors to disappear. 



Before dismissing this subject it should be men- 

 tioned that Lorand, a Spanish investigator, is of the 

 opinion that senility is the result of primary degen- 



