85 

 €E:^^TKIFL'€j}AI. TfiIKOW£RN. 



These impart ii centrifugal force to tlie poison and thus scatter it into 

 a spray. 



475. ROTARY-BRUSH THROV/ER OF INSECT-PO"WDER. 



Bureau of Eatomolo'jij, Department of Af/,lrii/tare, Wu-^hiiigton, D. C. 



476. V/HISP THOWER OF POISON. 

 Bureau oj Eiitomoloijy, Department of A(/ri'-ulture, Washington, D. C. 



To be dipj)ed in the poison and then shaken over the plants. 



ROTARY BI.OWF.RN OF POISOI^. 



Those here shown are of small size, to be worked suspended on one 

 side or in the hands (^f a perso.n. 



477. FRONT-DISCHARGE ROTARY POV/DER-BLO"WER. 



Bureau of Entomologij, Deparimad of Agriculture, Washington, D. C. 



478. REAR-ACTING ROTARY PCWDER-BLOWER. 



With Forked Discharge. 



Bureau of Entomologij, Department of Agrlculturi\ Wat^hington, D. C. 



479. ROTARY BLOWER OF LIQUID. 



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



OSeiULATl^U BI.OWFKS OF POISON. 



Under this heading arc shown small bellows blowers, -worked suspended 

 ■from the shoulder or carried in tlie hands. 



480. METALLIC, FRONT-HANDLED, OSCILLATING BLOWER. 



Bureau of Entoinology, Dcpartmoit <f Agriculture, Washington, />. ('. 



To adjustable Powder-feeder [4.Sh/]; to stiif Under-i.ipe [-1S2, 483]. 

 The pipe dii'ccts the powder upwai-d l)eneath the foliage lu treat its 

 under surfaces. 



