THE CHART OF EVOLUTION 26 



where they can be used is to give to each individual, however 

 humble, the most stimulating environment and the most perfect 

 health. Then all our activities will assume far higher forms than 

 is now possible, for they will have far better material upon which 

 to work. In a single book it is impossible to discuss all the winds 

 and currents which bear the ship of human progress to this great 

 goal. Therefore, while remembering that many other factors are 

 at work, we shall confine ourselves to the relation between business 

 and health, and between health and climate as illustrated both at 

 present and in the course of evolution and history. 



