24 A Bulletin on Orchard Practice 



the spraying tank through a strainer to remove the residue 

 that would clog the nozzle. 



It is a common mistake to use too much lime in the prep- 

 aration of the sulphur-lime solution. Too much lime de- 

 stroys the caustic properties of the sulphur and renders the 

 spray less effective. It is best to use this preparation while 

 fresh, or nearly so, and according to the above formula. 



F. A. H. 



KEROSENE EMULSION. 



Kerosene 2 gallons 



Whale-oil Soap (or 1 qt. soft soap) ... % pound 

 Water 1 gallon 



Dissolve the soap in the water by boiling, and pour this 

 boiling hot into the kerosene, away from the fire. The mix- 

 ture is then to be agitated violently, preferably by pumping 

 it back on itself with a force pump. After a few minutes the 

 mixture becomes creamy in consistency. If well made, the 

 emulsion will stand for a long time without free oil rising to 

 the surface. Unless otherwise stated, use 1 gallon of the 

 emulsion to 15 to 20 gallons of water in spraying. 



PARIS GREEN. 



Paris Green 1 pound 



Good Lime 1 pound 



Water 125 gallons 



Slake the lime in a little water and then mix in the Paris 

 green to form a thin paste. Strain the paste into the water 

 so as to remove all lumps. 



See article on the Codling Moth for Arsenate of Lead 

 formula, the most modern of the poisonous sprays. 



