Smithsonian Report, 1947. — Stage 



Plate 2 



1. Counting mosquitoes on different colored shirts, Churchill, Hudson Bay. 

 "Barebacks" were also attractive bait. 



2. The author applying mosquito repellents to leg^ ami arms of volunteers in 

 Alaska to evaluate the most effective materials. (Photograph by Signal Corps, 

 U. S. A.) . 



