FUNGICIDE FORMUL/E. 25 



balance. Note: The surplus copper sulphate must hang 

 near the surface of the water in an open-work bag, and 

 not be thrown to the bottom of the vessel. The lime can 

 be kept caustic for some weeks if it is slaked, made into 

 a stiff paste, and stored in an old barrel and kept just 

 covered with a little water. The advantage of this method 

 is obvious. Every gallon of the copper sulphate solution 

 being known to contain 31b. of the chemical, it only re- 

 quires that it be diluted with water, and have added to 

 it some hme water prepared from the paste in the barrel 

 until the tests before-mentioned are complied with, .and 

 then the mixture can be made up with water to the proper 

 strength — that is, every gallon of copper sulphate at 31b. 

 to the gallon will make 15 gallons of Bordeaux mixture 

 ready for use. 



Uses. — As a remedy for the Potato Blight, Apple and 

 Pear Scab, Cucumber and Melon Mildew, Peach-leaf Curl, 

 Apple Mildew, Cherry-leaf Scorch, Tomato-leaf Bust, 

 etc. 



Time to Apply. — See notes in connection with each 

 disease. 



21. Woburn Bordeaux Emulsion. — The following 

 formula has been devised and recommended by Mr. 

 Spencer U. Pickering, M.A., F.E.S., Director of the 

 Woburn Experimental Fruit Farm, as an excellent com- 

 bined insecticide and fungicide : _ 



Copper sulphate 10 oz. 



Lime water 8J gal. 



Water to make up to nearly 10 gal. 



Paraffin (Solar distillate) ."^ 22^ oz. 



The above paraffin is sold by dealers in fungicides under 

 the name of Woburn Distillate, and is not inflammable. 

 This emulsion should be prepared as advised for Bordeaux 

 Mixture. Before using see that the mixture is well 

 churned. The foregoing may be purchased ready pre- 

 pared under the name of Woburn Bordeaux Emulsion 



