4 The Control of Mosquitoes 



of the species encountered may differ from those 

 which will be found elsewhere, and that methods of 

 procedure for malaria control must be modified 

 accordingly; but if in a large territory like Panama, 

 where conditions are most favorable for the 

 multiplication of mosquitoes every day in the 

 year, malaria has been controlled at a reasonable 

 cost, the methods which accompHshed the change 

 are worth consideration. 



Health officials from foreign countries have 

 visited the Isthmus to obtain practical infor- 

 mation in order to apply this later in malaria and 

 yellow fever eradication abroad. 



Much interest was shown by the thousands of 

 Americans who visited the canal, and many of 

 them asked why the same class of work could not 

 be attempted in malarial districts in the United 

 States, and also sought information about the 

 work accomplished and methods of procedure. 



The canal wiU be used by the commerce of all 

 nations, and the progress made in sanitation in 

 Cuba and Panama will have far-reaching effects. 



The character of the work at Havana was quite 

 different from that required on the Isthmus. The 

 general situation resembled more closely the condi- 

 tions and drainage problems occurring in the 

 southern part of the United States, and subtropical 



