10. ARSENATE OF LEAD. 



4 ounces arsenate of soda (50% strength). 

 1 1 ounces acetate of lead. 



150 gallons water. 

 Put the arsenate of soda in 2 quarts of water in a wooden pail, 

 and the acetate of lead in four quarts of water in another wooden 

 pail. When both are dissolved, mix with the rest of the water. 

 Warm water in the pails will hasten the process. For the Elm-leaf 

 Beetle use 25 instead of 150 gallons of water. 



11. WHALE OIL SOAP. 



2 pounds potash whale oil soap, 

 I gallon hot water. 

 For winter use only. 



12. KEROSENE EMULSION. 



^ pound hard soap, shaved fine. 



1 gallon water. 



2 gallons kerosene. 



Dissolve the soap in the water which should be boiling ; remove 

 from the fire and pour it into the kerosene while hot. Churn this 

 with a spray pump till it changes to a creamy, then to a soft butter- 

 like mass. Keep this as a stock, using one part in nine of water for 

 soft bodied insects such as plant lice, or stronger in certain cases. 



13. MECHANICAL EMULSION. 



A substitute for the last. Made entirely by the pump, which 

 draws water and kerosene from separate tanks and mixes them in 

 the desired proportion by a mechanical device. Several pumps for 

 this purpose are now on the market, but none seem to be entirely 

 reliable. 



14. RESIN-LIME MIXTURE. 



5 pounds pulverized resin. 

 I pound concentrated lye. 



I pint fish or other animal oil. 

 5 gallons water. 



