Part II.] POTATO DISEASES. 133 



To mix for spraying, 4 gallons of the lime solution is strained 

 into the spray barrel and made up to 25 gallons; 4 gallons of the 

 copper solution further diluted is poured in and the barrel filled 

 with water. Prompt and thorough stirring completes the mixture 

 for use. 



To make the 5-5-50 mixture, simply increase the amounts of 

 copper sulphate and lime by 1 pound each. 



