Insects of Shade Trees and Their Control. 23 
In the extensive spraying operations in New England for the gipsy 
and brown-tail moths motor-truck sprayers® (fig. 11) have been 
used to great advantage. 
The makes of spray machines now on the market vary a good deal 
in durability and efficiency. .The tree warden, before selecting an 
outfit, should consider carefully the several designs and choose an 
outfit that will best meet his requirements. 
SPRAYING ACCESSORIES.” 
The spraying outfit is not complete or efficient unless properly 
equipped with useful accessories. Spraying devices that will save 
Fig, 10.—Double-action hand pump for spraying home grounds or in the small 
community. (Quaintance and Siegler.) 
time or aid the tree warden in doing more thorough work should be 
provided. The equipment need not necessarily be elaborate or ex- 
pensive, but should be sufficiently complete and modern so that there 
will be no handicap when the time to spray is at hand. Spraying, to 
be most effective, must be done at critical periods, and delays caused 
by insufficient or inferior equipment may mean a heavy loss. 
SPRAY NOZZLES. 
Manufacturers of spraying machinery and accessories have placed 
on the market a large number of nozzles to which they have given 
®Department Bulletin 480, “ Solid-Stream Spraying Against the Gipsy Moth and 
Brown-Tail Moth in New England,” contains full information on the subject and may 
be purchased from the Superintendent of Documents, Washington, D. C., for 15 cents 
(postage stamps not accepted). 
10 Adapted from Farmers’ Bulletin 908. 
