242 REPORT 4, UNITED STATES ENTOMOLOGICAL COMMISSION. 



" The reservoir, A, is divided in the present instance by two longitudinal partitions, 

 i i, which break np the contents of the reservoir and prevent them from accumulating 

 in the lower portions of the same — openings J /, however, allowing such communication 

 as will j)ermit the entrance of sufficient material into the lower portion of the reser- 

 voir to supply the place of that expelled at each blast of the bellows, thus insuring an 

 even discharge of the whole contents of the reservoir. 



''In order to cause i he air to act only on the portion contained in this lower division 

 the nozzle has an inclined face, n, in which the pertoratious for the escape of the air 

 are formed, the air being thus directed against the bottom of the reservoir, and carry- 

 ing with it a small quantity of the contents, which are expelled through the spout, a. 

 A perforated disk, x, is inserted into the entrance of this spout to assist in distribut- 

 ing the contents evenly." 



Mr. Thomas Woodason, of Chicago, 111., is inanufacturiDg- some small 

 insect bellows having the construction of the common sanding bellows. 

 In Plate XXXII, Fig. 3, is represented one of the best made by him. 

 The powder is introduced into the double cone shaped reservoir by a 

 •can-screw opening above. A valve prevents the powder from sucking 

 anto the bellows at its neck. The blast-pipe from the bellows projects 

 into and beyond the center of the reservoir, where its end is closed 

 •completely. The air can only pass from this supply pipe in a lateral 

 •direction by a number of perforations. The feeding device has no ad- 

 justability. The powder pours into the discharge-pipe if that be di- 

 rected downward, and the feeding is affected by shaking and jolting, 

 yet in its way, though at some mechanical disad vantage, it does very 

 fair work as a distributer of poison. 



Mr. Woodason also mnkes a similar bellows with the common feeding 

 •device, shown in Plate XXXII, Fig. 2. The powder-box is a funnel with 

 its top closed, while its outlet communicates into the blast-pipe. It 

 ifeeds less regularly than the preceding one, especially when flour mix- 

 tures are employed. 



Another interesting blower for broadcast powdering is that patented 

 1(1:^0. 56558) in July, 1866, by Mr. J. W. Hendley, of Washington, D. 0. 

 'This machine is illustrated in Plate XXX 11, Fig. 1. It was used as 

 ■early as twenty years ago for blowing powdered sulphur as an insecti- 

 cide upon plants, but has sold in the trade chiefly as a '^sanding bel- 

 lows." The bellows proper is of ordinary construction, but the spout 

 uind feeder are peculiar. The latter is a can which oscillates up and 

 tlown on and with the upper or movable head of the bellows. A flexi- 

 ble segment in the neck of the feeder allows the can to move independ- 

 ently of the neck, which leads into the blast-spout at a point just beyond 

 the bellows. Inside of this neck is a barbed rod having its upper end 

 fixed in the can, so that the movements of the latter make the rod act 

 as a plunger and rattler in tlie neck to push the powder along down to 

 the blast. Just proximal of the feed-entrance the blast-pipe has a short 

 crook to help prevent the powder from getting back into the bellows, 

 while distal from it there is a flexible segment with an adjustable clamp 

 to set the discharge end at any angle desired. The exit end is broadly 

 flattened, having a slot-like discharge orifice to spread the blast. 



