o»^ 



276 



and from Nkrnst's formula (treated simply as an empirical formula) 

 log pcoQx. = — , + BT 4- JJ log T + C 



with the coeflicients 



.1 = — 567.49 C= + 20.851 



5 == + 0.010899 7) = — 6.9057. 



The values of the coefficients in both formulae hold for p in cms. 

 mercury. 



The comparison with the formula which Sackuk has deduced 

 from NeriNst's heat-theorem 



T 



2.3 



log p — — 



;. 



+ ^ loq T 



2.3 ET R ' 



1 



1 re 



— \ ~dT 

 3Rj T 



2.BR 



is given in table II. 



For details as to the manner in which the varions values have 

 been calculated the reader is referred to the previous paper. It will 

 be seen that the agreement is satisfactory at the higher temperatures 

 while at the low^er temperatures the deviations become very large. 



Finally 1 have calculated the heat of sublimation of solid argon 

 from the simplified CLAPEYRON-CL.\usius-formula 



_ RT' f dp 



^sol.-vap. — 



p \(lTjco<X. 



