CALCIUM ARSENATES AND ARSENITES. 



97 



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6~0 %. 



9 ^' 



Fig. 13. — Safet.v lines for spraying with commercial calcium arsenate in clear 

 weather: 1, pear; 2, elm; 3, apple; 4, cherry; 5, plum; 6, peach. 



96- 



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is 



S-0 



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 4>0 7o S'O 



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IP 



X 



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Si 

 z 



3 



Fig. 14. — Safety lines for spraying with commercial calcium arsenate in cloudy 

 weather: 1, pear; 2, elm; 3, apple; 4, cherry; 5, peach; 6, plum. 



