TEMPERATURE ON THE ELECTRIC CONDUCTING-POWER OE ALLOTS. 175 
Table V. (continued). 
7. 
Gold-copper alloy, containing 19-17 volumes per cent, 
of gold (hard drawn). 
Length 534 millims . ; diameter 0 550 millim. 
Conducting-power found before 0 
heating the wire 20-300 at 12-2 
Ditto, after being kept at 100° 
for 1 day 20 295 at 12 0 
Ditto, for 2 days 20 287 at 12-4 
Reduced to 0°. 
20-504 
20-517 
20-505 
T. 
Conducting-power. 
Difference. 
Observed. 
Calculated. 
13-40 
20-272 
20-278 
-0 006 
24-38 
20-088' 
20-088 
0000 
4001 
19-838' 
19-824 
+0014 
5503 
19-569 
19-573 
-0004 
70-11 
19-325 
19-328 
-0-003 
84-98 
19088 
19092 
-0-004 
99-87 
18-865 
18-861 
+0-004 
T. 
Conducting-power. 
Difference. 
Observed. 
Calculated. 
17-27 
79709 
79-670 
+0-039 
23-98 
77-952 
77-962 
-0-010 
39 55 
74-154 
74-212 
-0 058 
54-26 
70-294 
70-913 
-0-019 
69-29 
67-920 
67-879 
+0-041 
83-86 
65-213 
65-175 
+0 038 
98-78 
62-645 
62-677 
-0-032 
X=84-322-0-27999;:+0 0006162;+ 
9. 
Platinum-silver alloy, containing 19*65 volumes per 
cent, of platinum (hard drawn)- 
Length 169 millims. ; diameter 0-518 millim. 
Conducting-power found before D Reduced to 0° 
heating the wire 6 6565 at 18 0 6 6960 
Ditto, after being kept at 100° 
for 1 day 6 0616 at 17'9 67008 
Ditto, for 2 days 6-6654 at 17 2 67031 
X=20 513— 0 017718^+0 00091170^. 
Gold-copper alloy, containing 0*71 volume per cent, 
of gold (hard drawn). 
Length 1049 millims. ; diameter 0-366 millim. 
Conducting-power found before e Reduced to 0°. 
heating the wire 79"884 at 15-3 84 008 
Ditto, after being kept at 100° 
for 1 day 80-389 at 14-3 84-264 
Ditto, for 2 days 80-01 4 at 15-5 84-200 
Ditto, for 3 days 79‘844atl6-6 84 322 
T. 
1 Conducting-power. 
8-27 
6-6850 
54-00 
6-5876 
99-90 
6*4957 
Table V. (continued). 
10 . 
Platinum-silver alloy, containing 5*05 volumes per 
cent, of platinum (hard drawn). 
Length 708 millims. ; diameter 0 626 millim. 
Conducting-power found before 0 Reduced to 0°. 
heating the wire 17"812 at 15-9 18-031 
Ditto, after being kept at 100° 
fori day 17-801 at 171 18-036 
X-67032-0 00221672f+0 000001394el 3 . 
MDCCCLXIV. 
T. 
Conducting-power. 
9*0 
17-920 
54-5 
17-319 
100-0 
16767 
X = 18 045 - 0-013960#+0-00001 183i 2 . 
11 . 
Platinum-silver alloy, containing 2*51 volumes per 
cent, of platinum (hard drawn). 
Length 381-5 millims. ; diameter 0-451 millim. 
T. 
Conducting-power. 
12-0 
31173 
560 
29-550 
100-0 
28-068 
X = 31-640 - 0039363i!+0 00003642;+ 
12 . 
Palladium-silver alloy, containing 23*28 volumes 
per cent, of palladium (hard drawn). 
Length 520 millims. ; diameter 0-802 millim. 
Conducting-power found before 0 Reduced to 0°, 
heating the wire 8-4936 at 100 8-5214 
Ditto, after being kept at 100° 
for 1 day 8 5147 at 10 0 8 5426 
Ditto, for 2 days 8-5052 at 9-1 8-5305 
Ditto, for 3 days 8-4918 at 8 6 8-5157 
Ditto, for 4 days 8-4868 at 10 0 8-5146 
T. 
Conducting-power. 
lf-0 
8-4846 
55-5 
8-3577 
100-0 
8-2256 
X=8-5152-00027644^-0000001313^. 
13. 
Copper-silver alloy, containing 98*35 volumes per cent, 
of copper (hard drawn). 
Length 1198 millims. ; diameter 0-572 millim. 
Conducting-power found before 0 Reduced to 0°. 
heating the wire 86-674 at 9-5 89-544 
Ditto, after being kept at 100° 
for 1 day 88-210 at 6-5 90-202 
Ditto, for 2 days 87'336 at 9 3 90165 
T. 
Conducting-power. 
Difference. 
Observed. 
Calculated. 
10-48 
86-919 
86-846 
+0073 
25-27 
82-583 
82-634 
-0 051 
39-57 
78-763 
78-861 
-0-098 
53-96 
75-317 
75-361 
- 0 044 
69-73 
72-007 
71-868 
+0-139 
85-12 
68-875 
68-802 
+0073 
98-35 
66-348 
66-442 
-0094 
X=90-021-0-31050i+0 0007193^. 
2 B 
