158 
MEASUREMENT OF HIGH TEMPERATURES. 
[BULL. 
positions given are volume percents, except in the case of phosphide 
and arsenides of copper, where mass percents are meant. 
Table 40a. — Showing MattMessen's and Vogt's results for the electrics of gold, of silve', 
and of copper alloys. 
■- 
Alloy. 
Composition. 
A.'o 
Observed. 
Mi- 
crohms. 
Calcu- 
lated. 
axlO 3 
A„ x 10 3 
ax 10 s 
JaxlO 3 
Au 
79 
3.67 
506 
3.69 
—2 
AuCu 
1.6%Cu 
56.1 
2.65 
359 
2.63 
+ 2 
Gold alloys < 
AuCu 
18.3 %Cu 
16.1 
0.75 
103 
0.79 
—4 
i 
AuAg 
20. 1 % Ag 
21.5 
1.11 
137 
1.03 
+8 
I 
AuAg 
47. 9 % Ag 
15.1 
0.70 
9 
0.74 
—4 
Ag 
*AgCu 
AgCu 
109 
3.82 
691 
3.83 
±0 
1.5%Cu 
79.7 
(?)4. 12 
510 
8. 2 % Cu 
80.3 
2.75 
514 
2.88 
-13 
AgCu 
46. 7 % Cu 
74.9 
2.80 
480 
2.69 
+ 11 
Silver alloys... < 
AgPt 
2. 5 % Pt 
31.6 
1.24 
202 
1.20 
+ 4 
AgPt 
5. % Pt 
18.0 
0.77 
115 
0.73 
+ i 
AgPt 
9. 7 % Pt 
6.7 
0.33 
43 
0.34 
- 1 
AgPd 
23. 3 % Pd 
8.5 
0.32 
55 
0.41 
- 9 
AgAu 
19. 9 % Au 
21.7 
0.90 
139 
0.86 
+ 4 
Cu 
CuAg 
102 
89.5 
3.87 
3.45 
653 
573 
3.98 
3.54 
—11 
— 9 
1. 6 % Ag 
CuAg 
4.8% Ag 
82.3 
3.25 
527 
3.29 
— 4 
CuAg 
22. 4 % Ag 
69.8 
3.03 
447 
2.85 
+ 18 
CuAu 
0.7 % Au 
84.0 
3.82 
538 
3.35 
- 3 
CuAu 
19. 2 % Au 
20. i 
0.86 
131 
1.11 
-25 
CuFe 
0. 5 % Fe 
38.9 
1.55 
249 
1.76 
-21 
CuZn 
5. % Zn 
60.4 
2.47 
2.52 
— 5 
CuZn 
10. 9 % Zn 
46.9 
2.05 
300 
2.04 
+ 1 
CuZn 
23. G % Zn 
21.3 
1.88 
136 
1.14 
+ 74 
Copper alloys.. J 
CuZn 
CuZn 
29.4% Zn 
42. 1 % Zn 
21.7 
21.8 
1.27 
1.37 
139 
140 
1.15 
1.16 
+ 12 
+21 
CuSn 
1. 4 % Sn 
62.5 
2.68 
2.59 
+ 9 
CuSn 
6. % Sn 
19.7 
1.00 
126 
1.08 
- 8 
CuSn 
11. 6 % Sn 
12.1 
4.69 
77 
0.89 
—12 
CuSn 
12.3 %Sn 
10.2 
0.67 
65 
0.74 
- 7 
CuSn 
14. 9 % Sn 
8.8 
0.55 
56 
0.69 
-14 
CuP 
1. % p 
23.6 
1.32 
151 
1. 22 
+10 
CuP 
2. 5 % P 
7.3 
0.48 
47 
0.64 
-16 
CuAs 
Trace 
61.1 
2.64 
391 
2.54 
+ 10 
CuAs 
2. 8 % As 
12.9 
0.74 
82 
0.84 
—10 
CuAs 
5. 4 % As 
6.3 
0.51 
40 
0.61 
- 9 
a -|- m — n K 
Gold alloys : m = — 0. 000045 ± 0. 000030 
n = -\- 0.00721 ±0.00010 
Silver alloys : m = — 0. 000112 ± 0. 000031 
n = +0.00538 ±0.00085 
Copper alloys : m = — 0. 000386 + 0. 000040 
n= + 0.000551 ±0.00012 
Rejected. 
(812) 
