INSECTS AND INSECTICIDES. 7 



Distillate Emulsion for Black Scale on Citrus Trees. — The follow- 

 ing are the proportions for the stock soltition: 



Distillate 28° (untreated) _ 5 gallons. 



Hot water _ __ 5 gallons. 



Whale-oil soap IJ pounds. 



The whale-oil soap must first be dissolved in the water. Then 

 add the dissolved soap to the distillate. It is important that 

 the distillate be placed in the mixing vessel first, then place 

 the dissolved soap on top. Then attach the spray pump to 

 the bottom of the vessel in which the compound is being 

 mixed, and keep pumping it out of the vessel through the spray 

 pump and back into the vessel, until the whole becomes of a rich 

 creamy substance. Keep pumping or churning it through the 

 pump until it becomes a complete emulsion, without a speck 

 of free oil in sight, which will take from ten to fifteen minutes. 

 When properly emulsified, it should increase in volume about 

 one third, because it becomes aerified. 



After the stock solTition has been thoroughly prepared, it 

 will readily mix with cold water. To each gallon of the above 

 stock solution add 14 gallons of cold water. Always place the 

 emulsion in the spray tank first, then add the water, as by this 

 means a more uniform mixture can be made. This emulsion 

 can be applied with an ordinary hand spray pump. 



Summer Wash for San Jose Scale and Other Armored Scales on 



Deciduous Trees. — Following are the proportions of materials 



to be used: 



Whale-oil soap _ _ 20 pounds. 



Sulphur _- 3 pounds. 



Caustic soda 98% 2 pounds. 



Water 100 gallons. 



Place sulphur and caustic soda in about two gallons of 

 water and boil for at least one hour. Dissolve the soap by 

 boiling in water. Mix the two solutions, and reboil all for a 

 short time. Apply the spray warm. 



This wash also makes a good combination spray for scale 

 and fungus. 



For Individual Trees and Shrubs on a Small Scale use the fol- 

 lowing: 



Whale-oil soap - 1 pound. 



Hot water ._ _ __ 5 gallons. 



Dissolve the soap bj"^ boiling, and apply warm. 



