Absolute  Measure  of  Surface-conductivity  for  Heat. 
First  Series. 
Atmosphere  moist.     Copper  Ball  polished  bright. 
Means  of  nine  sets  of  Observations. 
395 
I. 
ean 
stions 
\e  sets 
iserva- 
>ns. 
II. 
DifiFerence 
of 
tempera- 
ture, 
D. 
Hi. 
lo»10  D. 
IV. 
log10D'-log10D" 
V. 
log6D'-logeD" 
VI. 
Heat  emitted 
per  second 
VII. 
Mean  difference 
of  tempera- 
ture, 
£[D'-D"], 
VIII. 
Heat  emitted 
per  second, 
calculated  by 
formula, 
4 
4 
c. 
by  observa- 
tion. 
19 
i-28 
•82 
•60 
•14 
15 
1-37 
•2<5 
1-64 
•89 
•42 
:-5S 
;-96 
15 
•20 
•57 
•99 
•51 
66-88 
60-79 
5521 
50-10 
4551 
41-38 
37(U 
34-28 
31-21 
28-48 
26-02 
23-85 
21-83 
2001 
18-39 
16-92 
15-56 
14-32 
•82527 
•78380 
•74200 
•69981 
•05815 
•61681 
•57570 
•53509 
•49429 
•45459 
•41529 
•37756 
•33907 
•30127 
•26467 
•22845 
•19207 
•15603 
•01037 
•01045 
•01055 
•01041 
•01033 
•01028 
•01015 
•01020 
•00992 
•00982 
•00943 
•00962 
•00945 
•00915 
•00905 
•00909 
•00901 
•02387 
•02406 
•02429 
•02396 
•02378 
•02366 
•02337 
•02348 
•02284 
•02261 
•02171 
•02215 
•02175 
•02106 
•02083 
•02093 
•02074 
•000223 
•000226 
000227 
000225 
000223 
000222 
000219 
000220 
000214 
000212 
000204 
000208 
000204 
000198 
000195 
000196 
000195 
6383 
58-00 
5265 
47-81 
43-45 
39-51 
35-96 
32-75 
29-85 
2725 
24-94 
22-84 
20-92 
19-20 
17-62 
16-24 
14-94 
000230 
000227 
000226 
000224 
000222 
000220 
000217 
000215 
000213 
000210 
000208 
000205 
000202 
000200 
000198 
000196 
000194 
Formula  for  calculating  column  VIII. : — 
x=  -000168  +  -00000198*--0000000m2. 
Second  Series. 
Atmosphere  moist.     Copper  Ball  blackened. 
Ten  sets  of  Observations. 
[. 
can 
ctions 
II. 
DifiFerence 
of 
in. 
logioD. 
IV. 
log10D'-log10D" 
v. 
logeD'-logeD" 
VI. 
Heat  emitted 
per  second 
by  observa- 
tion. 
VII. 
Mean  difference 
of  tempera- 
ture, 
KD'-D"], 
(t). 
VIII. 
Heat  emitted 
per  second, 
calculated  by 
formula, 
terra-         ture, 
ns.                D. 
4 
4 
C. 
■85 
5-46 
>-92 
r27 
t-29 
M9 
)-20 
Ml 
M2 
)-65 
5-59 
M4 
H6 
>-46 
B-29 
)-97 
1-79 
1-59 
67-44 
58-68 
5106 
44-52 
38-86 
33-98 
29-78 
26-20* 
23-08 
20-37 
1803 
15-98 
1419 
12-64 
11-25 
1004 
8-96 
7-98 
•82893 
•76849 
•70808 
•64856 
•58950 
•53122 
•47392 
•41830 
•30324 
•30899 
•25600 
•20358 
•15198 
•10105 
•05104 
•00186 
•95240 
•90195 
01511 
01510 
•01488 
•01476 
•01460 
•01433 
•01391 
•01377 
•01358 
•01325 
01311 
•01290 
01258 
01265 
01230 
•01230 
01261 
•03478 
•03477 
•03426 
•03399 
•03362 
•03300 
•03202 
•03170 
•03126 
•03050 
03018 
•02970 
•02896 
02902 
02832 
•02846 
02903 
•000326 
•000326 
•000322 
•000319 
•000315 
•000310 
•000301 
•000297 
•000293 
•000286 
•000283 
•000279 
•000272 
•000272 
•000266 
•000267 
•000272 
6306 
54-87 
47-79 
41-69 
36-42 
31-88 
2799 
24-64 
21-72 
19-20 
17-00 
1509 
13-41 
11-94 
1070 
9-50 
8-47 
•000328 
•000328 
•000325 
•000321 
•000315 
•000311 
•000303 
•000298 
•000292 
•000287 
•000283 
•000279 
•000274 
•000271 
•000268 
•000265 
•000262 
