﻿Manchester Memoirs, Vol. xlix. (1905), No. 10. 5 



temperature was steady and comparatively slow. The 

 determinations of resistance being made at the rate of 

 two or three per minute, we were able to make between 

 100 and 150 observations before the temperature had 

 risen to o°. 





THLRMOMCTIR 



Fig. 2. 



Curves were then plotted as before, connecting the 

 resistances with the time. A typical curve is shewn in 



Fig- 3- 



The small fluctuations in the curves were sometimes 



accidental, due to handling of the apparatus during the 

 experiment. Occasionally they were produced inten- 

 tionally to test whether the two coils were taking up the 

 temperature of the enclosure at the same rate. It will be 

 noticed that a fluctuation on the one curve is always 



