INJURIOUS INSECTS OF 1904. 



107 



Fig. 112. — Knapsack Sprayer. 



of the trees constantly ; it is best 

 used apparently when the dew is 

 on trees and plants, thus relegat- 

 ing the work to the morning 

 hours ; it is not apparently effect- 

 ive against the codling moth ; one 

 has to personally avoid the dust 

 and see that it does not settle on 

 the horses ; for sucking insects, 

 in the opinion of the writer, 

 nothing is so good for summer use 

 as kerosene emulsion or Kero- 

 water ; arsenate of lead, which is 

 coming into universal favor as a 

 safe remedy for insects which eat 

 leaf, or fruit, or twig, bud or bark, 

 cannot, of course, be used as a 

 dust spray. 



Fig. 113. — Kero-watti i'uiiip on Barrel. Approxiiiia'-c cost of Pump mounted on barrel 

 (without hose or nozzles), $21.00. 



