86 



481a. ADJUSTABLE POWDER-FEEDER— Small. 



Bureau of Entomology, Department of Agricidiure, Washington, D. C. 



To feed insect poAvders to blasts from blowers. 



481b. ADJUSTABLE POWDER-FEEDER. 



Long Back-Can. 



Bureau of Entomology, Department of Agriculture, Washington, D. C. 



To be suspended on the back and be connected with a trailing blast- 

 pipe. 



482. SEPARABLE UNDER-PIPES. 



Bureau of Entomology, Department of Agriculture, Washington, D. C. 



For Powder-blowers to poison under surfaces of plants. Combined 

 with the Flat Knapsack Blower. 



483. SEPARABLE UNDER-PIPES. 

 Same as 482, but -with Double Crook. 



484. METALLIC BELLOWS BLOW^ER. 

 Front-handled. With suspended Side-can and Under-pipe [482]. 

 Bureau of Entomology, Department of Agriculture, Washington, D. C. 



485. METALLIC BELLOWS BLOW^ER. 



Rear-acting. Front-handled. 

 Bureau of Entomology, Department of Agriculture, Washington, D. C. 



To back-can feeder [4816] and under-fork [482 or 483]. 



486. LUNG BLOW^BR. 



Bureau of Entomology, Department of Agriculture, Washington, D. C. 



Mouth-piece to powder-feeder [481 «]. To be blown from the mouth. 



487. POWDER-BLOWER. 



Double-cone Form. 

 T. I\. Vi'ooddson, Chicaqo. III. 



