lO 



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. 



21. WHALE OIL SOAP. 



2 pounds potash whale oil soap. 

 I gallon hot water. 



For winter use only. 



22. KEROSENE EMULSION. 



^ pound hard soap, shaved tine. 



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. 



23. 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. 



24. RESIN-LIME MIXTURE. 



5 pounds pulverized resin. 



I pound concentrated lye. 



I pint fish or other animal oil. 



5 gallons water. 

 Place the oil, resin and i gallon of hot water in an iron kettle and 

 heat till the resin softens : then add the lye and stir thoroughly ; now 

 add 4 gallons of hot water and boil till a little will mix with cold 

 water and give a clear, amber colored liquid : add water to make up 

 5 gallons. Keep this as a stock solution. For use, take 



