94 Farmers’ Bulletin 1169. 
various trade names. Although these nozzles differ somewhat in size 
and style, the principle of construction is not distinctive for each. 
(Worthley.) 
GY. 
“ENTOMOLO 
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k sprayer of the Bureau of Entomology with crew and equipment. 
Fig. 11.—Motor-truc 
The nozzle type most suitable for shade-tree spraying is that known 
as the whirlpool disk type (fig. 12). It is as well adapted for use 
