AND STRAIN ON THE ACTION OF PHYSICAL FORCES. 
123 
Experiment XLVII. 
The same wire was treated with a load of 6 kilogs. in exactly the same way as it 
had been treated when 3 kilogs. were employed, and afterwards tested with loads from 
1 to 6 kilogs. 
Number of 
kilogs. in the 
load. 
Alteration of 
resistance at 12° C. 
Average 
alteration per 
kilog. at 12° C. 
Alteration 
of resistance at 
100° C. 
Average 
alteration per 
kilog. at 100° C. 
Alteration 
of resistance after 
cooling for 
24 hours to 12° C. 
Average 
alteration per 
kilog. at 12° C. 
1 
16-96 
16-96 
18-60 
18-60 
17-42 
17-42 
2 
33-81 
16-92 
37-25 
18-63 
35-53 
17-77 
3 
51-97 
17-32 
55-92 
18-57 
52-50 
17-50 
4 
69-98 
17-50 
75-02 
18-76 
70-80 
17-70 
5 
86-03 
17-21 
92-84 
18-57 
88-45 
17-69 
6 
102-84 
17-13 
111-95 
18-66 
106-10 
17-68 
Mean values 
17-17 
18-63 
17-63 
Experiment XLVIII. 
The same wire after having been heated to 100° C., and kept at this temperature 
for several hours with a load of 6 kilogs. on it, was allowed to cool, and in 24 hours 
the alteration of resistance produced by the cooling observed. 
Similar processes were employed with loads of 5 kilogs. and of 3 kilogs. 
Number of kilogs. 
left on the wire when 
cooling. 
Superior alteration of resistance 
of stretched wire produced by 
the cooling from 100° C. to 13° C. 
— signifies superior decrease of 
resistance of stretched wire 
on cooling. 
6 
-8-8 
5 
-8-0 
3 
-6-6 
