35 



of the blossoms, as they have been seen to feed on the drops of a gummy 

 € containing multitudes of bacteria, which ooze from ruptures 



in affected twigs, and then to visit soon afterwards the blossoms. 



Treatment. Cut off and burn affected twigs and branches whenever 

 they appear. The limbs should be cut off 4 to 6 inches below the dis- 

 eased part. 



Preparation of the Best Insecticides and Fungicides. 



/. Bordeaux Mixture. 



Copper sulphate (blue stone) 4 pounds. 



Fresh stone lime 4 pounds. 



Water 40 gallons. 



(1) Make a stock solution of bluestone by dissolving 25 pounds in 

 warm water in a barrel and add water to make up to 25 gallons. Every 

 gallon of this solution in first barrel contains one pound of blue stone. 



(2) Into a second barrel put 25 pounds of fresh stone lime, and add 

 with stirring small quantities of water to slake it. When fully slaked 

 make up to 25 gallons by adding water. Every gallon of milk of lime in 

 this second barrel contains one pound of lime. 



To prepare the Bordeaux, empty 4 gallons of blue stone solution in- 

 to the spray tank or barrel, which already should have 25 or 30 gallons 

 of water in it ; stir the milk of lime thoroughly and empty 4 gallons of it 

 through the strainer into the spray barrel with constant stirring; then 

 add water to make up to 40 gallons. 



Any one of several arsenical compounds may be used along with the 

 Bordeaux to form a combination insecticide and fungicide. The follow- 

 ing are among the best : 



(a) Paris Green. Add 4 to 6 ounces to 40 gallons of Bordeaux. 



(b) Arsenite of Soda. Boil together for 15 minutes one pound white 

 arsenic, 4 pounds sal soda, and 2 gallons water, until a clear solution is 

 obtained. Add 1 to 1^ quarts to 40 gallons of Bordeaux. 



(c) Arsenite of Lime. Boil together for 45 minutes 1 pound arsenic, 

 2 pounds fresh lime, and 1 gallon of water. Add one quart of this solu- 

 tion to 40 gallons of Bordeaux. 



II. The Lime-Sulphur Wash. 



Fresh Stone Lime 20 pounds. 



Sulphur (flowers) 15 pounds. 



Water 40 gallons. 



With warm water make the sulphur into a paste; put in the lime and 

 add about 15 gallons warm water with stirring. The Sulphur made into 



