Figure 5. — Cucumber Plants Sprayed with Normal and Basic Copper Acetates of ().2ii 

 and 0.75 Per Cent Slrcngtlis and Gassed with HCN. 

 A. basic copper acetate (!{4.4 per cent Cut without gas: C. with gas; B. normal copper acetate 

 f:>1.8 per cent Cu) without gas: D. with gas. All controls gassed only. Injury occurs after the action 

 of gas. irrespective of the presence of alkali in the spray. 



