INTERNATIONAL PUBLIC HEALTH 159 



and service in sixty of the governmental areas of the 

 world. It has demonstrated on a large scale the possi- 

 bilities of the control of hookworm disease and the use 

 of such control measures as a means of educating whole 

 populations in the matter of public health work. The 

 International Health Board of the Foundation has also 

 conducted a successful campaign which aims at the 

 complete eradication of yellow fever. This has called 

 for the cooperation of Mexico, Central America, and 

 several South American countries. The outcome is a 

 striking proof of what can be accomplished when 

 nations work together with complete confidence and 

 good-will. 



Thus as we try to get a picture of what is going on to- 

 day in the world in the interests of the health of all the 

 nations, we see that there is something like an approxi- 

 mation to the ideal system which a superman might 

 conceivably try to set up. As compared with what re- 

 mains to be accomplished, only an insignificant start 

 has been made, but looked at from the standpoint of a 

 century ago, really striking progress has already been 

 achieved. In the last half century the scientific re- 

 sources of modern medicine have been enormously 

 enriched. The causes of a great number of devastating 

 diseases have been discovered; the methods of con- 

 trolling them have been worked out; medical education 

 has been put upon a higher level; a beginning has been 

 made in the training of expert sanitarians and an entire 

 hygienic personnel. Organization of health administra- 

 tion has been greatly increased in efficiency. The death 

 rates in all the leading countries of the world have fallen 



