A preliminary introduction to the study of entomologyTogether with a chapter on remedies, or methods that can be used in fighting injurious insects; insect enemies of the apple tree and its fruit, and the insect enemies of small grains . Fio. 216.—The Galloway Knap- Fig. 217.—The Garfield Knapsack Back Sprayer. — Henion & Sprayer.—Field Force Pump Co. Hubbell, Chicago. The Arsenites.—Under the name of arsenites we have several veryeffective insecticides. These are the Paris green and London purple ofcommerce, and arsenite of lead. The first is an arsenite of copper, and the 116 REMEDIES, OR ME
A preliminary introduction to the study of entomologyTogether with a chapter on remedies, or methods that can be used in fighting injurious insects; insect enemies of the apple tree and its fruit, and the insect enemies of small grains . Fio. 216.—The Galloway Knap- Fig. 217.—The Garfield Knapsack Back Sprayer. — Henion & Sprayer.—Field Force Pump Co. Hubbell, Chicago. The Arsenites.—Under the name of arsenites we have several veryeffective insecticides. These are the Paris green and London purple ofcommerce, and arsenite of lead. The first is an arsenite of copper, and the 116 REMEDIES, OR METHODS USED. Fig 218.— V Kaapaack Sprajer in nse, second an arsenite of lime. The first two are preferable to white arsenicitself for use as insecticides on account of their color, which acts as asort of a safeguard against accidents, and also from the fact that theyare more readily held in suspension in the liquid while being used. The
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectinsects, bookyear1894
