INJURIOUS INSECTS OF 1903. 119 



Formula No. 2 : 



Resin, 20 pounds; 



Concentrated lye.. 4 pounds ; 



Fish oil, 23^ pints ; 



Water, 100 gallons. 

 Place the resin, lye and oil in a kettle with sufficient water 

 to cover them to a depth of 3 or 4 inches. Boil about 2 

 hours, making additions of water, until the compound looks 

 like very black coffee. Dilute to one-third the final bulk 

 with hot water or with cold added slowly over the fire, mak- 

 ing a stock solution that must be diluted to 100 gallons when 

 ready for use. This is a winter wash. 



48. Saccharate of Copper — 



This fungicide is used extensively in France in place of 

 Bordeaux Mixture. 



Formula : 



Copper Sulfate, 4 pounds ; 



Lime, 4 pounds ; 



Molasses, 4 pints ; 



Water, 25 gallons. 

 Slake 4 pounds lime and dilute it with water. Dissolve 

 4 pints of molasses in a gallon of water and mix with the 

 lime. Stir thoroughly and let it stand a few hours. Dis- 

 solve 4 pounds copper sulfate in 10 gallons of water and 

 pour in the lime-molasses solution while stirring briskly. 

 Allow the mixture to settle. Draw ofif the clear greenish 

 solution for use. (Mass. Exp. Sta. Bui. 80, 1902.) 



49. Scheele Green — 



This is not the same as Green Arsenoid. Scheele Green 

 is entirely worthless as an insecticide, because it contains 

 so much soluble arsenious oxide. 



50. Soap — 



This is quite valuable as a contact insecticide. 

 Use Ivory soap (loc. size), i bar; 

 Water, 15 gallons. 



