50 WORLD-POWER AND EVOLUTION 



countries will probably show a relationship of some kind between 

 health and business. In Germany such a relationship seems clear. 

 Business activities follow the lead of health so long as the govern- 

 ment does not interfere. The waves of business are not delayed 

 so long after the waves of health as in the United States, presum- 

 ably because they are not so large. Otherwise the relationship is 

 similar. Thus far it has been possible only to scratch the ground 

 in this important field. When deeper ploughing is possible rich 

 harvests will probably be reaped. 



