Smithsonian Report, 1944.—Porter PLATE 4 
1. A HAND-OPERATED BARREL-PUMP SPRAYER. 
Extensively used for codling moth control late in the nineteenth century; still used to a limited extent in 
small orchards. 
2. PRIMITIVE TYPE OF GASOLINE POWER SPRAYER, USED IN THE EARLY 
TWENTIETH CENTURY FOR CODLING MOTH CONTROL. 
