152 



THE AMERICAN PEACH ORCHARD 



work into a thin paste, diluting finally with water 

 to exactly 25 gallons. When thoroughly stirred, 

 each gallon of the stock solution will thus contain 

 four pounds of arsenate of lead, the amount neces- 

 sary for 100 gallons of spray. In smaller spraying 

 operations the proper quantity of arsenate of lead 

 may be weighed out as needed, and thinned with 

 water. In all cases the arsenate of lead solution 

 should be strained before or as it is poured into the 

 spray tank. The necessary care should be exercised 

 to keep the poison out of the reach of domestic and 

 other animals." 



SOLUBLE OILS 



In the universal campaign against the San Jose scale 

 a considerable figure is cut by the soluble oils. 



These are simply vari- 

 ous preparations of 

 coal oil made up to a 

 specific gravity prac- 

 tically equal to the 

 specific gravity of wa- 

 ter and in a form that 

 they will readily mix 

 with water. The 

 usual method of using 

 consists simply of 

 mixing the oils with 

 the water in the spray 

 tank. This is so very 

 much easier than mak- 

 ing lime-sulphur mix- 

 ture, and their use is 

 attended with so much less annoyance, that many 

 growers prefer them. They are not generally so 



THE "MISTRY" NOZZLE 



