OSCILLATING BLOWERS OF POWDERS. 
239 
XXXIV. The base of the bellows is damped fast to the plow, while 
its face, r, is free to be moved. A spring' inside the bellows distends it. 
The cleat on its head extends as an arm, .r, which is connected with 
the plowman's foot, preferably by a jointed rod of stout wire, n. A 
double loop about the heel and instep forms a comfortable and secure 
attachment to the rod, and has a weak part strong enough to work the 
bellows, but not with sufficient strength to drag the plowman in case 
of a runaway accident. When the foot is advanced the section of the 
rod next to it falls to a horizontal position, while the second section 
swings forward as a pendulum. The length is such that during the 
moment while the person's weight is resting on the foot the advancing 
plow causes a pull on it, and thereby a pu If from the bellows, the pull 
being made by the horse only. A series of such puffs succeed each 
other, one occurring each time the foot is planted. The discharge from 
the bellows sweeps through the short pipe, //, is fed by poison in the 
reservoir, />, and conducted through the pipe, t, which has a flexile pert, 
*, and behind the plowman an outlet, .v, directs it from below diagonally 
upward into the row. The putt's, which occur at intervals of about two 
feet apart, spread so broad as to overlap, and thus till all parts of the 
row with the poison. As shown, one part of the pipe near its end may 
drag upon the ground. Instead of this a pair of branch pipes may be 
used to Supply t wo rows. 
A similar bellows apparatus, to be carried by a person, is shown in 
Plate XXXIII, Fig. 2, The can, p, is hung upon the back by a loop 
passing over tin' shoulder. The hand -bellows, >\ may be operated be- 
tween the hands, or, if it is suspended beneath the arm pit, by one arm. 
Its blast tube extends through the base of the can as a feed-pipe, and 
so communicates with the pendent or trailing branched pipe, i (/ 9, sup- 
plying two rows as shown. 
Instead of the pendent pipe a pair of hanging branched pipes can be 
connected with the main blast, and thus the apparatus is enlarged for 
poisoning four rows at a time. 
A person can use this arrangement on horseback. Riding down one 
middle the branched pipes hang between the two adjacent middles, 
supplying two rows on each side. For this purpose the hanging tubes 
must be elongated and flexible. 
In Plate XXXI, Pigs. I, 2, .'3, 4, and 5, is represented a very small 
hand blower, which may be used where the worms appear in small 
patches. It consists of the hand-bellows, t>, discharging through the 
pipe, h s, which perforates the base of the can,p, and extends far beyond, 
usually with its distal end, *, crooked, so it can be used to throw in au 
angular direction. This pipe may have two branches, and thus apply 
to a pair of rows. The device will also be found convenient for treating 
many plants and insects other than those of the cotton crop. 
The figures referred to need to be noticed more in detail. Fig 4 may be 
taken as presenting the more typical form of this device. It represents 
