How To Destroy Insects

The Bureau of Entomology, Department of Agriculture, Washington, sends out the following, for use as insecticides on or about plants, etc.: London purple - To twenty pounds flour from one-quarter to one-half pound is added and well mixed. This is applied with a sifter or blower. With forty gallons of water one-quarter to one-half pound is mixed for spraying. Paris green - With twenty pounds of flour from three-quarters to one pound is mixed and applied by sifting or by a blower. The same amount of the insecticide to forty gallons of water is used as a spray. Bisulphate of Carbon - For use in the ground a quantity is poured or injected among the roots that are being infected. Against insects damaging stored grain or museum material a small quantity is used in an air-tight vessel. Carbolic acid - A solution of 1 part in 100 of water is used against parasites on domestic animals and their barns and sheds; also on the surface of plants and among the roots in the ground. Hellebore - The powder is sifted on alone or mixed one part to twenty of flour. With one gallon of water one-quarter pound is mixed for spraying. Kerosene-Milk Emulsion - To one part milk add two parts kerosene, and churn by force-pump or other agitator.

The butter-like emulsion is diluted ad libitum with water. An easier method is to simply mix 1 part kerosene with 8 of milk. Soap Emulsion - In one gallon hot water one-half pound whale oil soap is dissolved. This, instead of milk, is mixed to an emulsion with kerosene in the same manner and proportion as above. Pyrethrum, Persian Insect powder - Is blown or sifted on dry, also applied in water one gallon to a tablespoonful of the powder, well stirred and then sprayed. Tobacco Decoction - This is made as strong as possible as a wash or spray to kill insect pests on animals and plants.