G08 
DR. J. T. BOTTOMLEY OR THERMAL 
Tab-le III, —Copper globe, silvered and polished. (Apparatus, fig. 1.) 
November 4, 1889. Vacuum. 
Pressure--^ M. 
.r04 
Temperature of bath suiTound- 
ing enclosure, 14^‘4 C. 
November 5, 1889. Vacuum, and 
most thorough diying since 
yesterday. 
Pressure — M. 
2’5 
Temperature of bath surround¬ 
ing enclosure, 15°'6 C. 
November 6, 1889. Air, very 
cby, admitted in full pressure to 
enclosure of yesterday. 
Barometer not noted. 
Temperatui’e of bath surround¬ 
ing enclosure, 15°‘7 C. 
Excess of tem¬ 
perature 
of globe above 
tempei’ature of 
surroundings. 
Loss of heat per 
sq. centim. per 
second per 1° C. 
of excess. 
Excess of tem¬ 
perature 
of globe above 
temperature of 
surrouncRngs. 
Loss of heat per 
sq. centim. per 
second per 1° C. 
of excess. 
Excess of tem¬ 
perature 
of globe above 
temperature of 
surroundings. 
Loss of heat per 
sq. centim. per 
second per 1” C. 
of excess. 
6?-4 
4-53 X 10-5* 
72° 1 
3-54 X 10-5 
66°8 
1-75 X 10“^ 
65-6 
4-50 * 
70-8 
3-52 
61-2 
1-72 
64-0 
4-50 * 
69-5 
3-50 
55-9 
1-68 
; 62-5 
4-44 
68-2 
3-47 
51-2 
1-65 
! 597 
4-38 
' 66-9 
3-45 
46-9 
1-61 
i 57-0 
4-32 
657 
3'44 
43-1 
1-58 
i 54-2 
4-25 
64-5 
3-42 
397 
1-54 
! 52 0 
4-20 
63-4 
3-40 
36-6 
1-51 
j 49T 
4-12 
62-2 
3-38 
.33-8 
1-47 
46-6 
4-05 
61-1 
3-36 
31-25 
1-44 
45-6 
4-02 
59-0 
3-32 
29-0 
1-41 
437 
3-96 
58-0 
3-.30 1 
26-9 
1-37 
41-9 
3-90 
56-0 
3-26 
25-0 
1-34 
40-2 
3-84 
54-1 
3-22 
1 
36-4 
3-69 
53-2 
3-20 
34-4 
3-00 
5P4 
3-16 
497 
3-12 : 
48-1 
3-08 ! 
46-6 
3-04 
45-1 
3-00 
437 
2-96 ! 
i 
* Vacmim not satisfactoiy at commencement. Improved to amount stated, M, by working 
pump; but somewhat variable all through. Probable cause, want of perfect drying. This would not 
be indicated as pressure by the MacLeod gauge. 
