46 



JOURNAL OF ECONOMIC ENTOMOLOGY 



[Vol. 6 



Location of Thermometers 



No. 1. In 2 inches of flour in elevator boot on floor 8 feet beneath steam pipes. 



No. 2. Hanging in middle of room 5 feet high, 15 feet from steam pipes. 



No. 3. In 2 inches of flour in elevator boot on floor, 12 feet from steam pipes. 



Result : Failed to reach killing temperatures in elevator boots on the floor, except 

 directly over radiators in space beneath the floor. Killing temperatures reached in 

 all other parts of the room. 



Second Floor 



Capacity of floor, 28,728 cu. ft. Amount of radiation 560 sq. ft. 



HEADING OF THERMOMETERS 



Location of Thermometers 



No. 1. Hanging in open 4 feet high, 15 feet from steam pipes. 

 No. 2. Between rolls in roller, 11 feet from steam pipes. 

 No. 3. Hanging in open 6 feet high near roller machinery. 

 Results: One hundred per cent of the insects were killed. 



