12 



FIELD WORK— Second Year 



This year (1919) three trees, of the Jonathan variety and about 12 

 years old, were caged with wire screen on the sides and top and cheese- 

 cloth on the bottom. One was used as a check; the other two were 

 sprayed and dusted with sulphur and arsenate of lead when in full bloom, 

 as described for the previous year. Colonies of bees having 18 pounds or 

 more of capped honey were moved in soon after the spraying and dusting 

 had been done. 



The weather was cold and rainy during a portion of the period of 

 observation (April 30-May 15). Dead bees were gathered in the cages 

 at intervals as follows: 



Tablij; V. — Showing Date of Gathering and the Number of Dead Bees 

 Taken From the Check, Sprayed, and Dusted Trees 



Fig. 6. Tree being examined was one of the several trees to be sprayed in the open. 



