CALCIUM ARSENATES AND ARSENITES. 93 



Safety Lines for Spraying with Pcre Acid Calcium Arsenate. 

 AB, clear weather; CD, cloudy weather. 



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9y 



FiG. 1. — Apple. 



Fig. 2. — Pear. 



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1: '' 



Humidity 

 iO TO £2 ?P 



Fig. 3. — Cherry. 



Fig. 4. — Plum. 



Fig. 5. — Peach. 



Fig. 6. —Elm. 



