34 BULLETIN 872, U. S. DEPARTMENT OF AGRICULTURE. 



Table III. — Data showing rise in temperatures in basement and on first floor. 





Basement: Capacity, 33,790 cubic feet: 

 radiation, 1,020 square feet 



First floor: Capacity, 40,040 

 cubic feet; radiation, 780 

 square feet. 



Time of day. 



Thermometer- 





No. 1. 



No. 2. 



No. 3. 



No. 4. 



No. 5. 



No. 6. 



No. 7. 



July 21, 1912: 



°F. 

 96 

 97 

 100 

 102 

 104 

 103 

 103 

 102 



°F. 

 128 

 134 

 136 

 136 

 38 

 140 

 143 

 145 



°F. 

 98 

 104 

 105 

 107 

 108 

 109 

 109 

 113 



°F. 

 98 

 98 

 98 

 102 

 106 

 109 

 109 

 109 



°F. 

 130 

 138 

 140 

 140 

 142 

 143 



°F. 

 121 

 123 

 123 

 124 

 125 

 127 



"F. 

 97 



10 a. m 



100 



12 m 



102 





108 





111 





113 







10.30p. m 



146 



131 



119 







SECOND AND THIRD FLOORS. 



Location and reading of thermometers. — No. 1, hanging in the open, 6 feet 

 high, 15 feet from steam pipes; No. 2, in flour in bottom of an elevator boot, 

 15 feet from steam pipes ; No. 3, in flour on bolting cloth in a reel, 12 feet from 

 radiation (cleaning room) ; No. 4, hanging in the open, 5 feet high, 12 feet from 

 steam pipes ; No. 5, in flour in a conveyor, 14 feet from steam pipes ; No. 6, 

 hanging in the open, 5 feet high, 10 feet from radiator (cleaning room). 



Table IV. — Data, showing rise in temperature on second and third floors. 



Time of day. 



Second floor: Capacity, 43,120 

 cubic feet: radiation, 800 

 square feet. 



Third floor: Capacity, 43,120 

 cubic feet; radiation, 900 

 square feet. 



Thermometer- 



No. 1. 



No. 2. 



No. 3. 



No. 4. 



No. 5. 



■ "F. 



°F. 



°.F. 



110 



120 



108 



113 



126 



114 



115 



131 



116 



121 



136 



120 



124 



138 



123 



126 



139 



124 



128 



141 



127 



129 



142 



129 



No. 6. 



July 21, 1912: 



8 a. m 



10 a. m... 



12m 



2p. m 



4 p. m_... 



6p. m 



8 p. m 



10.30 p. m 



'F. 



112 

 119 

 122 

 127 

 130 

 128 

 128 

 130 



116 

 121 

 125 

 130 

 132 

 134 

 136 

 138 



RESULTS OF HEATING MILL NO. 2. 



One hundred per cent of the insects were killed everywhere except in elevator 

 boots resting on the concrete floor in the basement. 



Mill No. 3. 



Brick building; day (July 27-28, 1912) calm and partly cloudy; outdoor 

 maximum temperature 105° F. ; outdoor minimum temperature 73° F. ; heat- 

 ing system, steam pipes along wall ; steam pressure of about 100 pounds main- 

 tained during heating. Capacity of mill, 1,000 barrels. 



