Smithsonian Report, 1948.—Knipling PLATE 2 
1. A scene in one of the Anopheles colony rooms. Margaret Greenwald and 
Jean McHarg are shown caring for the colony which was an important aspect 
of the mosquito research program. 
2. A scene in the larvicide testing room. Edna Hinchey is shown adding the 
desired concentration of a test chemical to water in a beaker prior to introduc- 
tion of mosquito larvae. 
