700 



in virtue of the observations of the absorption lines and their influence 

 on the specific heats of other gases (see among others Bjerrum) ; we 

 then find as extremes for the terra with v : 



tero and log I 1 — e 



3 . IQi-» . 4.86 . 10- 

 2Öf 



Starc'K and Bodenstein's observations now yield the following 

 table for the terms of 8 : 



TABLE I. 



Van der Waals's equation for / = and Tetrode's entropy 

 expressions yield, therefore, the valutas of the seventh column of the 

 above table ; Sackur's values always yield 0,4343 less ; Van der Waals's 

 equation with A =z '20 ii yields the values of the eighth column. 



If we now write equation 8 in the form i 



2n Et=o 

 2.303ir 



+ TlogM=TC, 



(9) 



we find 



TABLE IL 



