312 
Proceedings of Royal Society of Edinburgh. [sess. 
Thermoelectric Powers referred to Palladium. 
Metal. 
Thermoelectric 
Power at 
Neutral Point 
with Cobalt. 
0° C. 
100° C. 
Co, . 
7*00 
17-31 
Pd Bi 13 , 
5-98 
6-46 
- 10° '*4 C. 
Pd Bi 8 , 
9-38 
9-96 
+ 24°"5 
Pd Bi 5 , 
14*45 
14-69 
74°-l 
Pd Bi 4 , ...... 
17-44 
17-44 
101°-4 
Pd Big 
21-73 
22T3 
148°-9 
Pd Bi 2 
29-10 
29-55 
224°-0 
Bi, . . . . . . . 
86-0 
8S-8 
The numbers in the last row have been calculated from the 
numbers in all the six Pd Bi rows. For if p is the thermoelectric 
power between Pd and Bi, and p n the same between Pd and Pd Bi W) 
we know that 
P~P n _n j 
Pn 1 
or 
p = (n+ l)p n . 
Thus, from the six sets of values corresponding to p n we obtain 
the following values for p at 0° C. and 100° C. : — 
n+ 1. 
p at 0° C. 
p at 100° C. 
14 
83-7 
90-4 
9 
84-4 
89-6 
6 
86-7 
88-1 
5 
87-2 
87-2 
4 
86-9 
88-5 
3 
87-3 
88 -7 
Means, . . 
86-0 0-8 
88-8 0-7 
This table is obviously an indication of the accuracy of the 
experiment. 
And now, referring everything to the lead-line, and expressing 
the thermoelectric power in the form 
p = A + IB,. 
