PARIS GREEN. 117 



The standard remedy for the destruction of insects which eat 

 the foliage or fruit. The lime is added to prevent the Paris 

 green from burning the foliage. Slake the lime in a little water, 

 make into a thin paste and strain. Wet the Paris green with 

 a little water and make into a thin paste. Mix the lime and 

 Paris green and add the remainder of the water. 



Formula 6. bordeaux mixture. 

 For potato blight and other fungous diseases. 



Copper Sulphate 5 pounds 



Fresh Lime (unslaked) 5 pounds 



Water 50 gallons 



The copper salt is dissolved in a wooden tub or earthern jar 

 and the lime slaked in a separate vessel. Dissolve the copper 

 sulphate ("Blue Stone") in about two gallons of hot water in a 

 wooden or earthern vessel by stirring, or by suspending it from 

 the top of the vessel in a cloth bag; pour the solution into the 

 tank or barrel used for spraying and fill one-third to one-half 

 full of water. Slake the lime by the addition of a small quantity 

 of water, and when slaked add 10 or 15 gallons of water and 

 stir freely. Pour the milk of lime thus made into the sulphate 

 solution, passing it through a brass wire strainer of about 30 

 meshes to the inch (No. 50) or through cheese-cloth backed 

 by common window screen. Stir constantly while adding the 

 lime. Add water to make the amount desired. 



Much time may be saved by preparing stock solutions. While 

 other proportions may be used, the following is a convenient 

 method of preparing the mixture : 



The stock solution of copper sulphate is made by weighing 

 out 50 pounds of copper sulphate, placing it in a bag and sus- 

 pending it in the top of a barrel containing 30 gallons of water. 

 The copper sulphate dissolves completely in a few hours. The 

 stock solution of the lime is prepared by slaking- 50 pounds of 

 lime, and adding water so as to make up 30 gallons and strain- 

 ing through No. 50 brass screen cloth. To slake and strain this 

 amount of lime takes less than one-half hour. For use, 3 gal- 

 lons of each solution and 44 gallons of water make up the for- 

 mula given above. The stock solutions should be kept well cov- 

 ered and be thoroughly stirred before dipping out. 



