PARK AND CEMETERY. 
225 
HIGH DUTY SOLID STREAM 
SPRAYING BY BOSTON PARK AND 
RECREATION COMMISSION. 
SPRAYING BIG TREES IN PUBLIC SQUARE OF TAUNTON, MASS. 
expensive to permit of extended work. 
This often causes those equipped with such 
apparatus to limit their field of operations 
to the badly infested areas, with the result 
that limited suppressive or exterminative re- 
sults are accomplished. 
The “mist” sprayers claim that more de- 
tailed and effective work can be done in 
reaching every leaf and twig by getting the 
mist nozzle in close contact to the point of 
infection. This is done by using long hose 
extensions and spraying handles ; by lad- 
ders or scaffolding on the spraying ma- 
chine conveyance. 
Some advance the argument that a tree 
cannot be properly sprayed with a “solid 
stream,” and the term “solid stream" is 
sometimes misleading and requires some ex- 
planation. The difference between the “solid 
stream” and the “mist” method is that in 
one case the stream itself is used as a 
means or vehicle for elevating the solution 
to its proper height, where it is broken up 
into a fine mist, while in the other case a 
hose is used to elevate the solution and 
must be carried into tbe trees to within a 
few feet of the spraying operations. 
Many sprayers are improperly catalogued 
as “high pressure.” Of course, it is pos- 
sible to raise the pressure on nearly any of 
the standard fruit sprayers to 250 or 300 
pounds pressure per square inch while op- 
erating one or two mist nozzles. These 
GOULD’S SPRAYER AT WORK ON SHADE 
TREES, SHOWING METHOD OF OPER- 
ATING “MIST SPRAYER” OUTFIT. 
DEMING SPRAYER AND OUTFIT FOR 
MIST SPRAYING OF SHADE TREES. 
ONE HORSE MIST SPRAYING OUTFIT IN USE ON LOW TREES. 
