( 80 ) 



substituted for 1 -(- 1^- ^^^ t'^ i^ mostly near J, ,f on the other luxnd 

 mostly near 0, we shall again transform (29) hy means of (28), 

 From (28) follows viz: 



%(1— (i) = % 



(p-f «/,.)" 



(l+(n— l)t?)"-'_ 





7o 



when the temperature function cT^ " e ^^ is indicated by 6. 

 Hence : 



1-/5 



logip-}-"/,,^) 



l+{n-l)^ 



1= n lot] 



(/> + V.-) 



^ 



l+(/i-l)/? 

 and (29) reduces to 





(o) 



_/> + «/"'•- l + (n-l)^ /?' 



a 



-i~i)-^(i 



1 



A6 



1 



because log ^ has the same value in the two phases, and is accordingly 

 cancelled. Now />, -|- f-b = yz^.^, lieiice also : 



_/9 + V.'-^l+(.i— l)i? /i' 



a 

 ~R1' 



2.1-A 



, 1 1 



(29") 



analogous to (19") in V, p. 456. 



If only for the liquid state we substitute the 2'"^ member of (c) 

 for the J**^ member in (29), we get: 



log 



, . (29^) 



analogous to (J 9^) in V, loc. cit. 



The relation (29) can be protitably used when {i and /i' are both 

 near 0; (29'') when they are both near 1; and (29''), when /? is in 

 the neighbourhood of 1, l^' on the otiier hand not very far from 

 — as will in reality occur most frecjuently. If in (he last case 

 ji=l, /?' ^ (), V ^ nb.^, '</ = /> J may be put (this is the case at some 



1 f—^f^\ 

 distance from a critical iioint), we mav write — -— — ; — I for 



b,\ nb. 



