610 
DR. J. T. BOTTOMLEY ON THERMAL 
Table V.—Copper globe silvered and highly polished. (Apparatus, fig, 2.) 
Marcli 7, 1890. Air. 
Marcli 10, 1890. Air. : 
Pressure 75’8 centims. 
Pressure 76 centims. | 
Temperatui’e of bath surrounding enclosure, 
12° C. 
1 
Temperature of bath surrounding enclosure, 
13° C. i 
1 
1 
■ Excess of temiieraturc 
of globe above tempera¬ 
ture of surroundings. 
Loss of heat per sq. 
centim. per second per 
1° C. of excess. 
Excess of temperature 
of globe above tempera¬ 
ture of surroundings. 
Loss of heat per sq. 
centim. per second per 
1° C. of excess. 
O 
214-9 
2-53 X 10-^ 
0 
2.31-3 
2 ,55 X 10-^ 
188-7 
2-49 
221-1 
2-52 
165-5 
2-45 
193-4 
2-48 
145-4 
2-41 
169 5 
2-44 1 
128-0 
2-37 
148-9 
2-40 
113-0 
2-33 
131-2 
2-35 
99-9 
2-29 
118-5 
2-31 
88-5 
2-25 
102-4 
2-27 ! 
78-6 
2-21 
90-8 
2-23 
i 69-8 
2-17 
80-7 
2-18 
1 62-3 
2-13 
71-9 
2-14 
55-8 
2-09 
64-2 
2-10 
50-0 
2-05 
57-4 
2-06 
44-9 
2-00 
51-5 
2-01 
40-4 
1-96 
46-3 
1-97 
36-4 
1-92 
41-7 
1-93 
32-8 
1-88 
37-5 
1-89 
