Force  in  the  Contact  of  Metals,  267 
The  calculation  of  the  deviation  for  these  two  experiments 
gives:  — 
No.  1.  Deviation  =1-36 
No.  2.         „  =2-42  - 
Mean     .     . 
=  1-89  r 
Copper- Aluminium . 
Exp.  45. 
No.  1. 
Diff.  of  temp. 
Deviations. 
Conducting-power. 
7-4     . 
.     .      32-0 
167-0 
7-2     . 
.     .      31-0 
167-0 
73     . 
73     . 
.     .      31-5 
.     .      31-0 
Mean  .  1670 
Mean 
.  7-3       Mean  .  31'38 
Exp.  46 
No.  2. 
8°1     . 
.     .      37-3 
168-0 
7-9     . 
.     .      367 
168-0 
7-9     . 
7-8     . 
.     .      35-0 
.     .      34-6 
Mean  .  168-0 
Mean 
7-93     Mean  .  35-9 
Whence 
No.  1.  Deviation 
=41-18 
N 
3.  2. 
=43-12 
Mean     .     . 
=  42-15 
Cadmium-  Copper, 
Exp.  47 
No.  1. 
Diff.  of  temp. 
Deviations. 
Conducting-pow  er. 
9-6     . 
.     .      10-5 
167-0 
9-5     . 
.     .      10-1 
166-5 
93     . 
91     . 
.     .      10-0 
.     .        9-8 
Mean  .  166*8 
8-9     ... 
.     .        9-7 
- 
Mean 
.  9-28     3 
lean..  10-02 
Exp.  48 
No.  1. 
10*4     . 
.     .      105 
166-0 
10-3     . 
.     .      100 
10-4     . 
.     .      10-2 
10-2     . 
.     .      10-2 
9-9     . 
.     .      10-5 
Mean  .  10*21     Mean  .  10*28 
