( 520 ) 



In the same way: 



(1— .t'V""' + .^V'= !■ 

 From this we solve: 



e ' — 1 e 



X =: -^ ^ ; X ^=z — 



-/J 



e — e e 



or, in a form convenient for the calculation: 



— ; X ^=1 X e ' . . . . . . (4) 



e — 1 



From these equations, and also from equation (4) of the first com- 

 munication (in which ii\ = ^i and io^z=:q^) we find easily: 



(IT RT^ x-x' dT RT' x-x' 



dx (IV).;, +.'.'<7, x{\-x) dx' (l-,c)q^^.vq, x' {1-x') 



For the initial course of the meltingpoint-curve follows from this 



or, in connection with (2) : 

 when we put 



dT\ RT' { _« {dT\ m\^ 0,. 



dxj^ q^ V VJ^'^J, 9i 



The jinal course (for the lowest temperature T^) is found by 

 changing the letters, so, by putting further! — c-c^yandl — x'=y': 



— = {e — 1) ; — = {I— e ),.... (5a) 



di/Jo g, \dyJo 9, 



i.e. taking (2) into account 



/dT 



V¥. 

 when putting : 



^1 and <9, being both positive quantities (7\ is always smaller 



than Tj), e^andé;^ will always be ^1, é? ' and e ^ always <^1. 



fdT\ fdT\ 



From this follows, that the quantities I — 1 and I — I will always 



- ( — I = <9i (6a) 



