270 REPORT 4, UNITED STATES ENTOMOLOGICAL COMMISSION. 
lias the bracket in the form of a kneed leg, bearing a flat foot-piece at 
the side of the bucket and upon the ground. Under the patent, No. 
209513, October 29, 1878, of Mr. A.B. Prouty, the National Manufactur- 
ing Company makes this pump having the leg sloping and nearly straight 
as it extends from afoot-plate upon the ground to the upper cap of the cyl- 
inder, where it is hinged fast so that it can be folded parallel against 
the cylinder. The discharge spout has a handle formed upon its base 
and bears a peculiar terminal nozzle that hangs when out of use upon a 
hook, while the upper cap of the cylinder has a projecting ring by 
which the whole device may be hung. In this form the foot-piece will 
hold the pump stable in a deeper vessel, and it may be thus held in- 
serted in the side bung of a barrel, in a tub, or large cau. 
The most decided variation upon the "Aquapult " was introduced by 
Mr. Johnson in his patent, No. 116599, of July 4, 1871. Its shape is 
shown in Plate XL, Fig. 2, where h denotes the suction-hose ; m the 
handle, and the discharge is downward. It consists of an "Aquapult" 
having the suction entrance at its side, o, while the cylinder discharges 
at its top into an ensheathing cylinder, fc, which discharges at the 
lower end. In this form the pump subserves the purposes of a hydro- 
nette or syringe, and has also the advantage that the reciprocating 
motion of the piston does not disturb the position of the nozzle, which 
is held immovable with the cylinder. An extension pipe, Pig. 5, should 
be added. 
Next should be noticed two styles of pump which are allied to the 
" Aquapults" by both form and adaptability. The " Aquarius n and the 
"Aquaject" (Plate XL, Fig. 3) have external resemblance to each 
other, but are different in operation and internal construction. The 
"Aquarius" is manufactured by Messrs. W. & B. Douglas, of Middle- 
town, Conn., seemingly under the patent, No. 33299, issued September 
17, 18G1, to Mr. B. Douglas. It is a strong pump, but is single-acting 
and, although provided with an air-chamber upon the cylinder, the jet 
thrown is of an intermittent character. The "Aquaject" as made by 
Messrs. Rumsey & Co., of Seneca Falls, N. Y., throws a good, strong, 
steady jet, being double-acting and also possessing an air-chamber. In 
Fig. 3 the operator is working the piston by his right band and hold- 
ing the cylinder by its foot-piece, the pump takes water by a suction 
hose leading from a bucket to enter the side of the base of the cylinder 
while the water is discharged through a hose held in the left hand and 
leading from the upper cylinder cap to which it is joined at a point be- 
neath 1 hi -globular air-chamber which surrounds the piston. Both of 
the foregoing pumps are strong in action and durable in construction. 
They cost from $8 to $10 each. The suction-hose can have greater 
length and be inserted in a barrel or other larger reservoir upon a cart 
or otherwise when desired, and the discharge hose may bear a spray 
nozzle oi' be connected with the main of any system of branching pipes. 
These and the " Aquapults " are very desirable for squirting upon trees 
