Smithsonian Report. 1947. — Stage 



Plate 5 



1. Mexican techiiician spraying DDT on thatcluKl homes near 

 ('uerna\'aca, Mexico. 



2. Moengo, Surinam. Practirally ex cry s(iuare foot of surface of these buildings 

 was sprayed with a 2.5-percent wet table DDT {>o\vder. 



