THE POISONING OF BEES BY ORCHARD SPRAYS 



HI 



Figrure 1. Daily Mortality of Houey Bees in Relation to Experimental Sprays, 1925. 



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of npplc blonin was replenished often enoufrh to insure fresh blossoms upon 

 Nvliich the bees would work. The combined spray was applied May 15 and 

 2G, and arsenate of lead alone on May 17 and 22. The heavy rain follow- 

 ing the first combined spray washed off most of the spray so that a new 

 application was made the 17th. 



The record of daily mortality, mean hourly temperature during part of 

 day bees were active, weather conditions and activity of bees follows; 



