302 REPORT 4, UNITED STATES ENTOMOLOGICAL COMMISSION. 
son, 111. (Plate LVI, Fig. 0), consists of a can, capable of holding about 
eight gallons of liquid, and so formed as to rest easy on the back, to 
which it is fastened, knaprsack-faskion, by adjustable straps, which reach 
over the shoulders and fasten across the breast. To the lower part of 
the can are attached two rubber tubes, which are connected with two 
nozzles or sprinklers. The inside of the can has three shelves, which 
help to keep the mixture stirred. There is a convenient lever at the 
bottom which presses the tubes and shuts off the outflow at will, and 
two hooks on the sides near the top, on which to bang the tubes when 
not in use. On the top is a small air tube and a capped orifice. 
"The Buggies Sprinkler. — Invented by Mr. Silas Buggies, of Three 
Rivers, Mass. (patent No. 203072, April 30, 187S), is an exact counter- 
part of Gray's Sprinkler, with the addition of a stirrer, agitated by the 
movement of the arm of the bearer. 
" The Townxend Sprinkler. — This was invented by Mr. George Town- 
send, of Greenville Centre, N. Y. (patent No. 212412, February 13, 1870) 
and is intended, like Gray's Sprinkler, to be carried on the back of a 
person. It consists of a tank with a stirring arrangement, but has only 
one sprinkling tube, and sprinkles, therefore, only one row of plants." 
It is illustrated in Plate LV, Figs. 3 and 4. L is one of the shoulder 
loops for suspending it. The can is shown in mesial section in Fig. 4, 
wdiile all of its iuterior appears in Fig. 3. D is the lid. The dashes, 
E E, are moved up and down with the rod, D F, by the handle, F. The 
lever, T, is worked by a string to the hand and opens the valve, N, 
against the spring, P, to free the liquid through a pipe, G LI I, termi- 
nating in the nozzle, K, by which the spray is directed. 
Automatic hand- sprinklers. — Under this section come naturally 
the ordinary watering pots or garden-sprinklers with which all are so 
familiar that descriptions seem unnecessary. Many variations on the 
standard watering-pot have been patented, but they seldom if ever 
appear in the trade. The use of automatic hand-sprinklers upon horse- 
back has been described on page 300, and the kinds of manv punctured 
nozzles preferable for employment on them are discussed in the chap- 
ter on nozzles. Here it should be added that the sprinkler illus- 
trated in Plate LV, Figs. 1 and 2, and described on page 273, answers 
well as an automatic hand-sprinkler, usable instead of the watering 
pots, and generally preferable. When the basal valve is held open the 
spray descends direct from the base. The valve may be held up me- 
chanically by adding a hook or loop from the bail to the valve-stem, 
and this is more convenient than to be constantly tipping the common 
sprinkler. 
FOR DRY POISON; SIFTERS. 
Here will be included the various sieve-machines or sifters, and they 
may be grouped as (1) Reciprocating- sieve Machines ,v (2) Rotary-sieve 
Machines; (3) Reciprocating-stirrer si I ters, and (3) Rotary- stirrer Sifters. 
The sifters are probably the worst machines for distributing dry 
