THE TREE DOCTOR 229 



straining it through a brass wire strainer of about 30 meshes to 

 the inch. Pour more water over the remaining lime, stir and 

 pour into the other ; repeat this operation until all the lime but 

 stone lumps or sand is taken up in the milk of lime. Now add 

 water to make 50 gallons in the tank. After thorough agitation 

 the mixture is ready to apply. The mixture must be made fresh 

 before using, and any left over for a time should be thrown out. 



2 Bordeaux Mixture II. 



Copper sulfate, 2 pounds. 

 Quicklime, 2 pounds. 

 (Or dry air slaked or hydrate of lime one-fourth more.) 



Water to make 50 gallons. 



For use on such trees as have foliage injured by Bor- 

 deaux I. 



Stock solution and lime putty. 



A solution of copper sulfate, containing say one pound of 

 sulfate to the gallon of water, may be made up and permitted to 

 stand indefinitely in a covered barrel if no lime is added. Such 

 a solution is known as a stock solution and two or four gallons 

 of this stock solution, according to the strength desired, is taken 

 for each 50 gallons of the mixture to be made. For extensive 

 spraying, a long trough or box of uniform width may be used, 

 in which to slake and keep the lime. The quicklime is weighed 

 out according to the amount needed, immediately placed in the 

 trough and slaked with a small quantity of water. The whole 

 is evenly spread and covered as a putty with water to exclude 

 the air. This putty may be removed in calculated portions, 

 placed in a tub and treated like the freshly slaked lime. By 

 means of stock solution of copper sulfate and the lime in putty 

 state, much valuable time is saved in filling the barrels or tanks 

 used in spraying. 



3 Ammoniacal Solution of Copper Carbonate. 



Copper carbonate, 6 ounces. 

 Ammonia, about 3 pints. 

 Water, 50 gallons. 



Dissolve the copper carbonate in the ammonia and add the 

 water. 



