THE LEAD ARSENATES. 



9 



Apple — Results of Spraying with Pure Acid Lead 

 Arsenate. 



AB, safety line. 



Humidity. 



96- 



1 



^^ 



7S- 



6S 



^B 



Fig. 1. — Clear weather. 



9S 



SO 



KS 





76' 



66- 



H u TTtcditu. 

 CO 70 



FO 



90 



Fig. 2. — Cloudy weather. 



