Screening and Destruction 209 



During 1909 a number of camps were located 

 along the new line of the Panama Railroad, 

 officially known as the Panama Railroad Reloca- 

 tion. This is to be the permanent railroad after 

 the Canal is completed. Four of these camps, 



Table of malaria incidence at construction camp. 



with an aggregate population of about 1200, were 

 located along twelve miles of the road, at intervals 

 of three to four miles. 



It would have been costly to attempt drainage 

 and oiling operations of sufficient magnitude to 

 protect all these camps from malaria, and it was 

 decided to house the employees in screened cars, 

 and to carry out daily mosquito catching in all of 

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