296 
PARK AND CEMETERY. 
MACHINERY AND MATERIALS FOR SPRAYING 
The most reliable information on how 
and when to spray can generally be had 
from the state or government experi- 
ment stations, but the selection of 
spraying machinery and materials must 
be done by each individual tree man 
for himself, after a careful comparison 
of the various types of machines, sup- 
plies and materials. 
High power types of sprayers mounted 
on auto-trucks are among the latest de- 
velopments in spraying machinery, and 
an especially powerful and efficient type 
of auto-sprayer was manufactured by 
the Fitzhenry-Gutpill Co. of Cambridge, 
Mass., for the Massachusetts State For- 
ester. This power-truck sprayer greatly 
lessened the cost of roadside work and 
DEMING SPRAYER AT WORK ON GROUNDS OF NATIONAL CA§H REGIS- 
TER CO., DAYTON, OHIO. 
made it possible to spray both sides of 
the highway at the same time while 
traveling. One of the serious draw- 
backs heretofore with this type of 
spraying has been the time occupied in 
going after and returning with a load 
of water. In many cases the distance 
traveled is over five miles, which would 
require with a horse-drawn machine 
over an hour and a half, while only 19 
minutes was occupied in making a round 
trip of 4.8 miles with this machine and 
drafting from a brook 400 gallons of 
water. When the spraying season is 
over, by releasing four clamps, the 
spraying attachment can be removed and 
replaced by a regular truck body, there- 
by converting the vehicle into a three- 
ton auto-truck. 
The prime essential in applying the 
several forms of arsenical compounds 
and fluid fungicides is an apparatus 
which will break up the fluid into a 
fine, mist-like spray that will settle 
lightly upon the foliage, yet with suf- 
ficient force and quantity to thoroughly 
coat the leaves. 
In extensive woodland spraying this is 
accomplished by what is termed “solid 
stream” spraying, which is to force from 
a straight bore nozzle, varying in size 
according to the height of the trees to 
be sprayed, a stream with sufficient force 
to thoroughly break it into a mist after 
the height is attained. 
Since the early days of spraying, great 
advance has been made in the manufac- 
ture of spraying machines, especially 
those of high power and capacity best 
suited to park and cemetery, street tree 
and forestry service. Spraying solutions, 
chemicals and supplies of all kinds can 
also be had in any form or quantity 
ready for use, so that the sprayer whose 
time and facilities are limited, does not 
have to put in months or years of ex- 
periment with chemicals and supplies. 
With the availability of the necessary 
information at '’the experiment stations 
and the great variety in machinery and 
materials ready for use, the practice of 
spraying has rapidly increased and may 
be at the service of any community that 
needs this modern protection for the 
trees. 
HURST POWER SPRAYER AT WORK ON STREET SHADE TREES. 
