32 



plants at \ lb. to 50 gallons of water. In this form the copper is very 

 soluble, quickly washed off by heavy rains, and it is therefore necessary 

 to spray after every heavy rain. 



Conditions of Success. 



The secrets of success in this work are (1) in the ability of the operator 

 to fully understand his machines or pumps and keep them in good work- 

 ing order at all times ; (2) to understand the preparation of the insecti- 

 cides and fungicides and the economy of time in getting them ready for 

 use ; and (3) in the thorough and rapid application at just the right 

 time. 



