. Economic entomology for the farmer and the fruit grower, and for use as a text-book in agricultural schools and colleges; . An " emulsion" knapsack sprayer for combining kerosene and water. For applying insecticides underground, which is sometimes desirable in using bisulphide of carbon against the cabbage-root- maggot and other subterranean species, there is only one satis- factory piece of machinery,—the McGowen injector. This is best explained by Fig. 481, illustrating its use on cabbages. The fol- lowing directions may be observed, and will at the same time indicate the method
. Economic entomology for the farmer and the fruit grower, and for use as a text-book in agricultural schools and colleges; . An " emulsion" knapsack sprayer for combining kerosene and water. For applying insecticides underground, which is sometimes desirable in using bisulphide of carbon against the cabbage-root- maggot and other subterranean species, there is only one satis- factory piece of machinery,—the McGowen injector. This is best explained by Fig. 481, illustrating its use on cabbages. The fol- lowing directions may be observed, and will at the same time indicate the method in which the machine may be used for other purposes. The method of inserting the injector is shown in Fig. 481. The hole should always begin at a distance of three or four inches
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectentomology, bookyear1
