THE RELATION OF SPECIFIC HEAT TO ATOMIC WEIGHT. 



141 



TABLE I. Mean Specific Heats. 



To these results may be added the mean spec! He heats of silver, nickel, and 

 aluminium taken from the previous series of experiments. 



TABLE II. Mean Specific Heats. 



The mean specific heats thus determined have been used, as in the former paper,* 

 for the calculation of Q, the total heat measured in the calorimeter. The values of Q 

 for the two elements tellurium and tin, the tellurides of nickel and tin, and the two 

 alloys of aluminium and silver, have been plotted against absolute temperatures, and 

 the results are shown in fig. 1, in which the curves are for the most part hyperbolic, 

 those of tin, tellurium, and tin telluride approaching an elliptic form. In the case of 

 tin, which melts at 232, this is most probably due partly to incipient fusion at 180, 

 the highest experimental temperature, and is in accordance with experience. 



* Part II., ' Phil. Trans.,' A, vol. 201. 



