458 

 Suininarizing, we get the following survey for the region of coexistence. 



m 



0.98 0.94 0.91 0.88 0.81 0.74 0.65 0.60 



At the lowest temperature, viz. t = 89,94 abs., y would be about 

 0,688, and i% accordingly 0,393, ^^ = /?„ X 1,389 = 0,397, so that 

 ^ ranges from about 0,40 to about 0,29. The liquid value 0,325 at 

 n = 0,4 can be in harmony with this. 



In order to examine whether the values of /?//,,. also agree quan- 

 titatively with our theory, we will in the first place indicate for the 

 different values of T(in) the corresponding values of n and y (calcu- 

 lated from 2y — 1 = 0,038 v^ T). Besides the value of t; : i;„ = z; : b, = 

 =zn: ^0 is given. ((?o = 0,286). 



The values i? : ^?o = 6 : h^ have been calculated from the tables of 

 § 16, viz. from those for y z= 0.75 and y = 0,70. We have inter- 

 polated for the values of y given in the above table. On an average 

 the found values of ^ are 6\/o higher than the values calculated 

 from our formula (30). If /?„ = 0,30' were taken instead of 0,28\ 

 the agreement would have been perfect. In connection with this it 

 is remarkable that the difference between ^fou„d and /?,,«/<, amounts 

 almost constantly to 0,018 or 0,019. The course of the /^-values is 

 therefore perfectly identical with the course calculated from our 

 formula ; identity in the numerical values may be obtained by simple 

 change of /?„ from 0,28" to 0,30\ 



