CONDUCTIVITIES OF METALS AND ALLOYS AT LOW TEMPERATURES. 433 
Cadmium Rod. 
Tin Rod. 
Pure Redistilled. 
Pure Tin (Kahlbaitm). 
Density at 21° C. = 8'64. 
Density at 21" C. = 7‘28. 
Temp., 
H. 
scale. 
Resistivity, 
ohm per 
centim. cube. 
Temp., 
H. 
scale. 
Resistivity, 
ohm per 
centim. cube. 
°C. 
°C. 
+ 2U0 
7-72 x10-8 
-75-1 
5 - 05 x10 -6 
2U0 
7-72 
- 70-1 
5-15 
- 178-1 
2 • 22 
-65-4 
5-28 
- 174-1 
2-34 
-59-9 
5-46 
-17U0 
2-41 
-32-5 
6-18 
- 167-9 
2-48 
-29-3 
6-28 
- 165-9 
2-56 
- 25-2 
6-38 
- 125-4 
3-67 
-23-5 
6-44 
- 116-9 
3-87 
- 5-7 
6-96 
- 110-5 
4-07 
+ 22-8 
7-78 
- 105-8 
4-18 
22-8 
7-78 
Brass Rod. 
Approx. •70 Cu, '30 Zn. 
Density at 22° C. = 8‘44. 
Temp., 
H. 
scale. 
Resistivity, 
ohm per 
centim. cube. 
Temp., 
H. 
scale. 
Resistivity, 
ohm per 
centim. cube. 
° C. 
° C. 
+ 21-5 
6 
57 x10- 6 
- 92-3 
5-06 x10-° 
21-4 
6 
57 
-87-2 
5-13 
- 174-5 
3 
84 
-78-6 
5-20 
- 171-0 
3 
89 
-76-6 
5-23 
- 165-1 
3 
97 
-68-8 
5-34 
- 161-2 
4 
03 
-29-3 
5-89 
- 158-9 
4 
09 
-25-7 
5-93 
- 150-8 
4 
16 
-22-7 
5-98 
— 109*1 
4 
78 
-20-4 
6-02 
- 104-6 
4 
84 
+ 14-9 
6-50 
- 99-5 
4 
94 
Temp., 
H. 
scale. 
Resistivity, 
ohm per 
centim. cube. 
Temp., 
H. 
scale. 
Resistivity, 
ohm per 
centim. cube. 
° C. 
° C. 
+ 11-6 
10-65 x10“° 
-98-6 
5-96 x10 c 
- 170-4 
3-00 
-91-3 
6-24 
- 170-4 
3-00 
-87-7 
6-44 
- 169-1 
3-17 
-52-9 
7-88 
- 165-9 
3-26 
-4 8-8 
8-08 
- 164-7 
3-36 
-46-7 
8-13 
- 162-3 
3-42 
- 42 • 2 
8-29 
- 163-1 
3 • 45 
-40-0 
8-42 
- 150-8 
3-51 
-36-1 
8-59 
- 148-8 
3-96 
+ 11-8 
10-70 
- 107-0 
5 -58 
13-3 
10-75 
- 103-1 
5-77 
13-3 
10-75 
Iron Rod. 
Fe - -994. 
Density at 21° C. = 7'74. 
Temp., 
H. 
scale. 
Resistivity, 
ohm per 
centim. cube. 
Temp., 
H. 
scale. 
Resistivity, 
ohm per 
centim. cube. 
°C. 
°C. 
+ 19-9 
14-33xlO- 6 
-81-8 
8-98 x10" 6 
- 175-3 
4-90 
-77-6 
9-15 
- 175-8 
4-87 
-71-4 
9-48 
- 175-5 
4-86 
-69-5 
9-56 
- 175-6 
4-86 
-66-9 
9-67 
- 174-2 
4-89 
-61-4 
9-96 
- 170-3 
5-01 
-21-8 
12-03 
- 166-3 
5-20 
-19-2 
12-19 
- 159-4 
5-45 
- 16-1 
12-33 
- 154-4 
5-64 
- 14-0 
12-46 
- 129-6 
6-76 
+ 10-3 
13-70 
- 121-4 
7-08 
22-1 
14-46 
- 117-0 
7-34 
21-0 
14-30 
-111-1 
7-59 
18-3 
14-21 
- 106-7 
7-81 
16-7 
14-16 
- 99-7 
8-16 
VOL. CCVIII.-A. 
