52 
PARK AND CEMETERY. 
SPRAYING DEVELOPMENTS IN MASSACHUSETTS 
' Solid Stream versus Mist. A Brief Statement of the Writer’s 
Experience and Observation During the Last Six Years. 
By R. W. CURTIS, 
Arnold Arboretum, Jamaica Plain, Mass. 
( Continued ) 
The most important feature of the 
outfit is that it is composed of two sep- 
arate units, one the sprayer proper and 
the other a supply cart of the same 
capacity to keep the sprayer always sup- 
plied with solution. My experience has 
taught the value of providing some fill- 
ing device to keep the expensive sprayer 
with its line of hose and gang of men 
from standing idle or losing time going 
for water. The two tanks, sprayer and 
supply, are of 400 gallons capacity each. 
They are mounted on medium .high, 
steel, roller-bearing wagons with four- 
inch tires. One team operates the two 
carts, whether in woodlands or on the 
roadside. If we are doing low road- 
side work and are on the move all the 
time the supply cart is not used, be- 
cause our water supplies are not far 
enough away to justify the use of two 
teams. 
The supply cart is a round, horizontal 
cart furnished with a simple agitating 
device consisting of four 4-blade pro- 
pellers mounted on a shaft running the 
full length of the tank, so placed as to 
bring the propellers one-quarter inch 
clear of the bottom of the tank. The 
end of the shaft projects through a 
stuffing-box in the rear end of the tank 
and is turned by a crank handle. After 
the driver has put in his poison a few 
turns of the crank stirs up the whole 
load. On top the tank in the center is 
mounted a common double-acting har- 
vester pump with suction pipe properly 
screened and delivery pipe consisting of 
a ten-foot reinforced two-inch rubber 
hose. When filling, the supply cart is 
driven up alongside the sprayer, the re- 
inforced hose thrown over into the man- 
hole of the sprayer, and the driver 
pumps over his load while the spraying 
goes on just the same. 
The sprayer itself consists of a half- 
round 400-gallon tank of the usual stock 
dimensions mounted forward of a triplex 
pump, and an ordinary six-horsepower, 
single cylinder, 2-cycle marine engine. 
The upper line of the tank is carried 
back to provide a protecting roof for 
the pump and engine. The side pieces 
of this frame are supported by two up- 
rights rising from the end of the bed- 
pieces, and are allowed to project over 
fifteen inches at the rear to furnish a 
place for coiling the heavy, three-quar- 
ter inch tar Marline hose without un- 
coupling it from the delivery valves. 
We always operate two such lines of 
hose and sometimes three. 
The wheel of the engine comes at 
the rear end of the outfit just where it 
is handy for starting, and the whole line- 
up is direct and compact. A universal 
coupling is inserted between engine and 
pump, and between pump and tank a 
simple cog-wheel connection is made di- 
rect from the pump shaft to the agitator 
shaft, which from there on is the same 
agitator as described for the supply cart. 
The engine is cooled by a coil of pipe 
submerged in the solution tank and sup- 
plied from a four-gallon water tank fitted 
with a glass gauge. The circulation is 
secured by the usual turbine pumping 
device on the cylinder head of the en- 
gine. A special safety release valve ex- 
hausts back into the solution tank direct 
from the delivery line. 
Another helpful little arrangement, 
which suggested itself as the fittings 
were being piped up, is secured by in- 
serting a wheel valve and a “T” and 
cap connection in the direct line of the 
suction pipe from tank to pump. This 
suction pipe drops straight out of the 
bottom of the tank and follows back 
to the pump below, the bed piece turn- 
ing up when it reaches the pump. The 
wheel valve is placed nearest the tank 
and the “T” and cap are turned down 
at an angle of 45 degrees. By closing 
this wheel valve the tank can be shut 
off and the pump can be drained out in 
case of accident or on a frosty night. 
Also by the same arrangement suc- 
tion can be secured direct from a pond 
or other outside source and the outfit 
can then be used for irrigating or water- 
ing trees or soaking down a manure 
pile or cleaning out a well, or for any 
similar purpose. It is understood, of 
course, that the suction where it leaves 
the tank is carefully screened by a stout 
copper wire screening box, and the man- 
hole of the tank is also screened by a 
The favorable report of R. B. Marshall, 
chief geographer of the Geological Sur- 
vey, on the creation of the proposed Rocky 
Mountain National Park in Colorado, is 
expected to mean that the American pub- 
lic will have another vacation playground 
in a very short time. A bill has been in- 
troduced in Congress providing for the 
segregation o.f the proposed park, the pri- 
vate lands therein to be taken in exchange 
for lands in other parts of the public do- 
hanging box strainer which has no busi- 
ness being anywhere else except in the 
manhole. 
This outfit, while not perfect, has 
nevertheless give very good satisfac- 
tion. There are some improvements I 
would make if I were building it again. 
I would substitute a 4-cycle, 2-cylinder 
engine in place of the 2-cycle, 1-cyl- 
inder. I would get a little larger pump, 
but not larger than my engine could 
handle with power to spare. I would 
put in a magneto instead of dry bat- 
teries, and I would mount the bed on 
springs. But, just as it is, the outfit is 
capable of good work and certainly de- 
livered the goods during the past season. 
The spraying gang consisted of an 
engineer who directed all the work, two 
nozzle men, and a helper for moving 
hose, ladder, etc. With two 150-foot 
lines of three-quarter-inch hose equipped 
with straight one-inch nozzles this en- 
gine would pump 400 gallons in thirty 
minutes under 200 pounds pressure, and 
average nine loads, or 3,600 gallons, per 
eight-hour day. This was in Woodland, 
for Gypsy Moth. The engine ate up 
nearly five gallons of gasoline a day, 
but ran right along and gave very little 
trouble from one end of the season to 
the other. 
Where three lines were used equipped 
with 10-foot poles and 3-cluster Vermorel 
nozzles, 160' pounds pressure jvas main- 
tained and six loads, or 2,400 gallons, 
were put out per day. This was with 
soluble oil, for San Jose scale on low 
crab apples and thorns. If three lines 
were equipped with single, misty noz- 
zles, the pressure was cut down to 100 
pounds and three loads, or 1,200 gallons, 
were put out per day. This was with 
soap solution, for lace bug on rhodo- 
dendrons and kalmias. On the whole, I 
consider this a good showing for a light, 
semi-high power machine, and I have 
no hesitation in recommending such an 
outfit for an orchard and a small amount 
of woodland spraying. 
(To be continued.) 
main. Only part of the famous Estes Park 
region will be included in the new park. 
It was at first intended to bring the entire 
Estes Park region into the area, but there 
was so much land under private ownership 
that this was deemed impossible. Only a 
small amount of privately owned land is 
included within the area outlined in the re- 
port, but the finest scenic features of the 
Estes Park region are within the park 
domain. 
PARK 
