﻿Manchester Memoirs, Vol. xlix. (1905), No. 10. 7 



was thus undetected. Such irregularities in the curves 

 are to be expected if we follow the analogy of the loose 

 powder conductor. 



46 ■ - r ' 



KjfifilQITON IN CpRBOhl RtSISTpNCL 



WITH Te.MP£RQTURC: 



•2.00° 



-150° 



"P£-RA TVRE 



-too" 



Tlat,a,i 



D£G--R£ES 



Fig. 4. 

 After a certain amount of contraction has taken place, 

 there must occasionally come a readjustment of the relative 

 positions of the particles which would become evident in 

 such a curve as the above one. Measurements of the 

 coefficient of expansion of carbon at these low tempera- 

 tures would probably decide whether the analogy still 

 holds here. 



