CONDUCTING POWEE OF ALLOTS. 
167 
Table IV. (continued.) 
Tin-Gold Series. 
Alloy. 
Volume per cent. 
Mean of 
Calculated con- 
ducting power 
from the volume. 
Conducting power. 
Temperature. 
Au 
Sn. 
98-73 
11-11 
23-6 
12-23 
Au..; 
95-89 
9-97 
23-8 
13-98 
Sfijg 
Au 
93-33 
9-18 
24-2 
15-55 
Sojg 
Au 
90-32 
7-76 
19-8 
17-40 
Sog 
Au 
86-15 
6-13 
19-2 
19-96 
Sog 
Au 
82-35 
4-98 
21-7 
22-30 
Sog 
Au 
79-54 
4-28 
21-3 
24-03 ^ 
S114 
Au 
75-67 
5-12 
22-3 
26-41 
Sng 
Au 
70-00 
8-86 
21-0 
29-90 ; 
Sn2 
Au 
60-87 
14-27 
18-1 
35-51 
JSn 
Au 
43-75 
8-88 
15-9 
46-03 
Sn 
Au, 
28-00 
5-18 
15-0 
55-72 
Sn and Au * 
2-11 
13-12 
21-4 
71-58 
Sn and Au * 
1-17 
19-59 
18-8 
72-16 i 
Tin-Silver Series. 
^"l80 
Ag 
Sn 
99-28 
11-37 
21-9 
12-08 
^"50 
Ag 
97-47 
11-46 
20-3 
13-69 
Ag 
96-52 
11-46 
20-3 
14-53 
Sn24 
Ag 
94-87 
11-57 
20-3 
15-99 
SOjg 
Ag 
93-28 
11-56 
20-1 
17-40 
Sni2 
Ag 
90-25 
11-53 
20-1 
20-09 
Sug 
Ag 
82-23 
12-23 
23-3 
27-19 
Sn^ 
Ag 
75-51 
12-58 
19-8 
33-14 
Sn, 
Ag 
60-66 
14-35 
20-6 
46-29 
Sn and Agt 
2-01 
23-95 
20-6 
98-22 
Sn and Ag f 
0-93 
35-71 
20-7 
99-17 
Here we find some curious results, viz. that some alloys conduct less than either of 
the metals composing them ; and on looking at Plate VI. on which the curves 
of the conducting powers of the alloys belonging to this class are represented, we see 
how rapidly the conducting power decreases on the one side of the curve with small 
per-centages of the other metal ; and if we follow it to the other side, we find how little 
the conducting power of the metal of Class A. is affected by large per-centages of the 
metal of Class B. To this fact I shall return when I come to the general conclusions. 
The lead and tin alloys, with a large proportion of antimony, could not be made into 
wire, on account of their extreme brittleness and hardness. The alloys of lead with a 
large proportion of gold were so excessively hard, brittle and infusible, that they could 
* The gold in these alloys was determined. 
t The amount of silver in these alloys was determined. 
+ On the same Plate, in order to show the decrement of the conducting power of the bismuth alloys, 
parts of the bismuth-lead and bismuth-tin curves are drawn on a scale in which silver is taken as 1000. 
