FORMULAS FOR SPRAYING MIXTURES. 527 



KEROSENE EMULSION, FORMULA (8). 



For Scale Insects and White* Fly. 



Kerosene oil 2 gallons. 



Soft whale oil soap . 1 quart. 



or chipped hard soap 1-2 pound. 



Water 1 gallon. 



Dissolve the soap by boiling in the gallon of water 

 and while still boiling hot, pour out into another vessel, 

 removed from the fire. Then add the kerosene and churn 

 steadily for fifteen or twenty minutes or until a good, 

 stable emulsion is formed. The best implement for do- 

 ing the necessary churning is a force pump, the liquid 

 being pumped back into itself until the emulsion is formed. 

 Make good the amount of water lost in boiling by adding 

 sufficient warm water to bring the solution up to 4 1-4 

 gallons. 



For use during winter months, dilute each gallon with 

 ten of water, and for use in summer months, dilute 

 at the rate of one gallon of the mixture to fifteen of 

 water. Never use kerosene emulsion on trees while shedded. 



GOOD'S CAUSTIC POTASH WHALE OIL SOAP, 

 NO. 3, FORMULA (9). 



For Scale Insects. 



Soap 12 to 15 pounds. 



Water 50 gallons. 



This soap was recommended by Prof. H. A. Gossard 

 in Bulletin No. 51, Florida Experiment Station, for use 

 against citrus scales of different kinds. It is now com- 

 monly used throughout Florida and has given good satis- 

 faction. 



