FORTY-THIRD ANNUAL. REPORT. 



123 



pounds of copper sulphate, with about the same amount of lime, to fifty 

 gallons of water. Poison is added as needed. The copper sulphate will 

 readily dissolve in two gallons of hot water, to which should be added 

 enough water to make twenty-five gallons or one-half barrel. Do not use 

 an iron or tin vessel to dissolve this in, as the copper sulphate will de- 



stroy it, and besides the iron will spoil the bordeaux. A wooden pail 

 is good. Slake the lime into a thin paste and add water to make twenty- 

 five gallons. Pour, or let these run together into a third barrel, and the 

 bordeaux is made. When it is emptied into the spray barrel or tank, it 

 should be strained through a brass wire strainer to catch any of the 

 coarse particles. 



Whenever it is necessary to use a quantity of the mixture, it is de- 

 sirable to have the lime and copper sulphate in ''stock solutions." 

 A quantity of lime is slaked to a paste and held so by being covered 

 with water. The copper sulphate, say fifty pounds, is placed in a clean 

 gunny sack and suspended in a barrel (one with wood hoops is much to 

 be preferred) containing twenty-five gallons of water. This will dissolve 

 in about a day. One gallon of this "stock solution"* is equal to two 

 pounds of copper sulphate. 



A good quick way to combine these three substances is as follows: 

 Put the amount of the "stock solution" of copper sulphate required in 

 a barrel, and add enough water to make 2.5 gallons, or one-half barrel. 

 Put about 7 pounds of the lime paste in a barrel and add 25 gallons of 

 water, making a thin whitewash. Pour, or let these two run together 

 into a third barrel, or directly into the spray barrel or tank, being sure 



♦Always stir this "stock solution" before dipping any out, In order that what Is used may be full 

 strength. 



