For tougher insects, such as leaf hoppers, mix 1 part of stock 

 with 5 parts of water. 



This is the best contact insecticide for soft-bodied insects, 

 but if for any reason it cannot be used, try 



5. Whale Oil Soap (for Summer Use). 



Parts. Per Barrel. 



Potash whale oil soap, . . 1 pound. 9 pounds. 

 Hot water, .... 5 gallons. 45 gallons. 



6. Whale Oil Soap (for Winter Use). 



Parts. Per Barrel. 



Potash whale oil soap, . . 2 pounds. 80 pounds. 

 Hot water, .... 1 gallon. 40 gallons. 



This was formerly much used as a winter treatment for the 

 San Jose scale, but is not now considered as good as some other 

 materials. It is included here only in case other treatments 

 cannot be used. 



7. Lime-Sulfur Wash (for Winter Use). 



Fresh stone lime, 20 pounds. 

 Flowers of sulphur, 18 pounds. 

 Water, 45 to 50 gallons. 



Slake the lime with some of the water in a large iron kettle, 

 sprinkling in the sulfur gradually. Start a fire under the kettle 

 to continue the heat begun by the slaking lime, and boil till 

 the mixture becomes dark orange in color, adding water till 

 35 or 40 gallons are in the kettle. Boiling should probably 

 take from forty minutes to an hour. Stir frequently, and a 

 successfully prepared lot should have little sediment on the 

 bottom when the boiling is finished. Strain through a fine 

 meshed strainer into the spray pump, adding the rest of the 

 water, and spray while warm. It is generally better to use 

 only the freshly prepared wash, though good results have some- 

 times been obtained with it even when it has stood over night. 

 This should not be applied to trees after the leaves have opened. 



Ready-made lime-sulfur wash is now on the market, and as 

 it is nearly as good as the home-made article, it is generally 

 better to buv it than make it. 



