SCREENING 



207 



report, 1 from which the following table has been compiled, labor 

 costing from 40 to 50 cents an hour; in this case, the chimneys 

 also were screened. 



DOES SCREENING PAY? 



It has been shown that good screening will greatly reduce the 

 incidence of the mosquito-borne diseases. Costs of good screen- 

 ing have also been discussed. The question as to whether or not 

 screening will pay, on a dollar-and-cent basis alone, may now be 

 taken up. 



1 "Malaria Control: A Report of Demonstration Studies," U. S. Public 

 Health Service, 1917. 



