INTRODUCTION 3 



act vigorously. The time when real estate men and 

 chambers of commerce denounce anti-malaria efforts 

 for fear of exposure is rapidly drawing to an end. As 

 one editor has wisely said : "There are two kinds of 

 boosting, both of which are good. There is the boost- 

 ing that brings good things here, and the boosting that 

 boosts bad things away." 



