Vol.. 7, 1921 PHYSICS: E. H HALL . 101 
are those which my formulae yield when the given values of the constants 
are put into them. 
Aluminium 
c 
Ci X 106 
C 2 X 10* 
Q 
5 
5o 
0.0846 
-2.85 
6.19 
1.45 
5.64 
176 
0.011 
0.142 
0.190 
ff (in ergs/ 0 C.) 
0o 
0 T OO 
n 0 xio- 
mooX io-* 
k xio» 
fexooXlO* 
Data 
Calc. 
(-0.016 + 0.006/) T 
(-0.016 + 0.0060 T 
0.477 
0.478 
0.492 
0.445 
202 
201 
263 
210 
380 
265 
Bismuth 
C 
Ci X 10« 
Ci X 108 
Q 
s 
X' C X10« 
h 
5 100 
0.19° 
-80.4 
0 
1.2 
4.35 
1088 
0.068 
0.169 
0.206 
a (ergs/ 0 C.) 
0 O 
0100 
no xio -4 
HieoX 10— • 
ko X 106 
fcioo X 10* 
Data 
Calc. 
-3.2T 
-S.2T 
0.0202 
0.0201 
0.0161 
0.0164 
0 
0 
0 
0 
9.30 
6.46 
Cobalt 
c 
Ci X 106 
C 2 
Q 
X'cXIO 16 
h 
*• 
5 109 
0.134 
175 
0 
1.55 
5.26 
32 
0.002 
0.125 
0.170 
<r (ergs/°C.) 
to («) 
0100 (6) 
noXio -4 
mooXio -4 
Ar o X106 
* 100 X10« 
Data 
Calc. 
7.8r 
7.8r 
0.161(?) 
0.160 
0.164(?) 
0.177 
156 
154 
172 
117 
102 
74.7 
Copper 
C 
Ci X 106 
C 2 
Q 
X'^XlOie 
0.068 
-16.6 
0 
1.49 
6.8 
64 
0.004 
0.162 
0.221 
a (ergs/°C.) 
0100 
noXio" 4 
nioo x 10" 
ko xio 8 
£100 X 10« 
Data 
Calc. 
-0.966r 
0.966T 
0.920 
0.928 
0.908 
0.866 
211 
211 
280 
229 
650 
455 
Gold 
c 
CiXioe 
C2XJO 9 
Q 
5 
X' C X10" 
h 
Sioo 
0.070 
-16.3 
8.7 
1.49 
6.7 
48 
0.003 
0.159 
0.217 
<r (ergs/°C) 
0ioo 
noXio -4 
n 100XIO-* 
feoX106 
fciooX10 fi 
Data 
Calc. 
(-0.934 + 0.00/) T 
(-0.934 4- 0.00/) T 
0.699 
0.696 
0.703 
0.666 
211 
210 
280 
227 
490 
351 
