I Ml 



|>K. K. (I. CKIKK1TIIS AND MR. KZKK GRIFFITHS ON TIIK 



Hence, if a = 1, we obtain S = 4'804, that is, just twice the value found by JOLY 

 for the specific heat of hydrogen at constant volume. 



We have endeavoured to ascertain how nearly the values obtained from this 

 expression are in harmony with the conclusions of other observers in the case of 

 elements not included in our list. It is difficult, however, in regard to the majority of 

 the elements, to consider any conclusion thus arrived at as decisive. The determinations 

 in the case of the rarer elements have been made with such small quantities that the 

 results are open to suspicion, and, but few investigators have so arranged their tempe- 

 rature ranges as to include C. Where values of S for different values of 6 have been 

 given, we have, on the assumption that the changes are of a linear order, deduced 

 the probable values at C., and in Table XXIX., p. 179, we have indicated the 

 authority and the temperature ranges from which those Values were deduced. Where 

 no data for such a reduction can be found, we have inserted any values which fall near 

 C., together with the mid- temperature and the experimental range. For example, 

 Cs 13 C. (EcKARDT, C. to 26 C.). We have given all the information we have 



TABLE XXX. 



