532 Dr. M. W. Travers and Mr. A. G. C. Gwyer. [Jan. 11 



A. E = 7-3322 ohms. a - 0-003899. 



In this set of experiments the liquid air was contained in a single 

 silvered vacuum vessel. 



B. 



Bo = 7-3319 ohms. 



= 0-003899. 



C. 



= 733-19. 



a = 0-003899. 



The second and third sets of experiments, in which the rate of 

 rise of temperature was exceedingly slow, are probably the most 

 accurate. 



If we calculate the value of A for the Centigrade temperature - 190 

 for value of 3 corresponding to 1 -90 and 1 -50, we find 



A (T = 190, 3 = 1-90) 10-47 



A (T = 190, 3 = 1-50) 8-27 



