66 POISONS —FOR BITING INSECTS 
Resin soap is sometimes added to a solution of Paris green and water, 
in order to make the material stick to smooth leaves. It may be 
bought in stores, and should be used at the rate of 3 pounds to 50 
gallons. 
Resin-lime mixture, especially adapted for the purpose of a ‘‘ sticker,” 
is made by heating in an iron kettle 1 gallon of water, 1 pint of fish oil 
or other animal oil, and 5 pounds of resin. Then add lye solutié in, 
prepared by dissolving one can of lye according to the directions on 
the can. After thorough stirring, add hot water to make 5 gallons, and 
boil two hours, adding water to make up that lost by boiling. The re- 
sulting liquid is light brown and clear and will unite smoothly with 
cold water. For use take 3 gallons to 50 gallons of water, then add 3 
gallons of thick whitewash, and finally add the Paris green. 
Advantages of Paris green are its cheapness, its quick action in kill- 
ing insects, and the fact that it may readily be obtained in most stores. 
Disadvantages are its liability to adulteration, the fact that it settles 
quickly in the spray barrel, that it sometimes burns the foliage, and 
that it is rather easily washed off by rains. The last-named fact is an 
advantage, rather than a disadvantage, if it is desired to spray plants 
that will soon be ready for use, and will therefore need to be washed 
clean. 
Arsenate of Lead 
Arsenate of lead (paste) . : : , . 38to 10 pounds 
Water. : : : ‘ F ; . 50 gallons 
or 
Arsenate of lead (powder) : 3 : .  lto 4 pounds 
Water. ; : : : : é . 60 gallons 
For small quantities use: 
Arsenate of lead (paste) . F : : . 1 tablespoonful 
Water. : : : : : : . 1 gallon 
Arsenate of lead is obtainable in two forms: a thick, light-colored 
paste, or a white powder. The former is more commonly the manner 
in which it is put up. The two do not differ chemically. Arsenate of 
