SPRAYING FOR CITRUS INSECTS AND MITES IN FLORIDA. 



BOILED EMULSION. 



19 



Formula. 



Paraffin oil. 

 Water _. 



.gallons 2 



__do 1 



Fish-oil soap pounds 2 



or 

 Hard soap do 1 



Directions. Put oil, water, and soap into a kettle or other vessel 

 that will stand fire, and heat to the boiling point. While still 

 very hot, pump the material (see fig. 16) into another vessel and then 

 back again. Emulsion can not be made by this formula without a 

 pump ; stirring is not sufficient. 



FIG. 16. A punip used for emulsifying the oil. This is used in making the emulsions 

 on a small scale. (Quaintance.) 



Dilute to make 200 gallons of spray material. 



For making the above formula the writer has used 9 and 15 gallon 

 kettles, wash boilers, and 100-gallon oil tanks with uniform success. 



If it is desirable to make this formula on a somewhat larger 

 scale, -the materials can be heated in a large kettle or other vessel 

 and then dipped into a barrel pump outfit and the mixture emulsi- 

 fied by pumping it back upon itself. For safety it is best to have 

 all the material pass through the pump twice, but it must not be 

 pumped after it has become cool. Excessive pumping will break up 

 a good emulsion. It can also be heated in a large galvanized oil tank 

 having a capacity of 4 barrels and emulsified by means of the spray- 

 ing machine. In this case the suction hose should be put into the 

 tank of hot material and the discharge hose into the spray tank. For 



