THE RELATION OF SPECIFIC HEAT TO ATOMIC WEIGHT. 



143 



REGNAULT, for example, found the molecular heats of easily fusible alloys to be very 

 much higher than those of alloys of higher melting-point.* 



The values of the true specific heats at successive temperatures on the absolute 

 scale are given in the following table, and are exhibited graphically in figs. 2 and 3 : 



TABLE III. True Specific Heats. 



It is obvious that the curves for the specific heats of the compounds are of the same 

 character as those for the metals aluminium, nickel, and silver given in the previous 

 paper, and that the inclination of each is determined by the principal ingredient. 

 Thus the curve for aluminium-silver containing 92 per cent, of silver is very near to 

 the curve for that metal, while the curve for the alloy containing 75 per cent, of 

 aluminium approaches the curve for pure aluminium. 



The atomic heats of the elements are obtained by multiplying the specific heats by 

 the respective atomic weights, which have been taken from the International Table. 



TABLE IV. Atomic Heats. 



; Ann. Chim. Phys.,' [3], 1, 137 and 183. 



