456 



1)11. CHAIiLES H. LEES ON THE EFFECT OF TKMI'EKATriM-: ON THE 



Paraffin Wax. (M.P. = 54 U.) 



The brass tube was filled by heating paraffin wax in it over a water bath, heating 

 the measuring apparatus in an air bath to the same temperature, then inserting it 

 into the melted paraffin in the tube, which was then cooled slowly from underneath. 

 As the paraffin contracted on solidifying, more was poured in at the top of the tube 

 till the whole was solid. 



CURRENT in Heaters '991 ampere. C 2 = '982. /> = -00971 f - 



With these results may be compared that obtained by the "divided bar" method 

 (LEES, 'Phil. Trans. Roy. Soc.,' A, 183, p. 481 (1892)). k = -00061 between 25 C. 

 and 45 C. 



