( 21)3 ) 



Now according to (if'), we liave: 



(v-h,^ 



iö 



1 



- 2.i(l-.i).^, (.,;+/ )-r 



dv (r-f l)(l-f/y) 



while according 1o (s) 



(r— A) ' - = — t"t— • 

 at" 1 -J- // 



Hence : 



(o-b)b"{i + >,y = 





1 



_(.6-+l)(l+//) I 



2,3{l-,^)if(,v^<f) 



4- ^ <i (1 - .?) (1 + ..,?) (l-2(i) (.H-^/)^ j - --'^- 



or 



{ü-o)b"{i^>ir = cf 



,/-4-l 



l?(l-i?)'/^ f 



1 ./;y(l + y7)" 



(.l,-4-l)- (•'' + ^P) ._ 



After substitution of 



•^■ — 1 (■«'• + 1)' 



we get further: 



(c-b) />" (1 -f jjY = 'f 



.>;-[- 1 



,? (1-^i) (.;-[- 2r/) 



(./;-t-l) L J 



hence finally (putting (i -|- // = in, see (5) j : 



1 



t' — brn x-\- i 



{.c + 2r/)) + -— (.i-;i-^ + 2,i- 1 ) (.. + rp)'^ 



.(12) 



6/. 

 Finally the value ot — can be tound trom 



b. 



from which follows 



b,, = b,j-{\-^)Lb, 



bic A6 



(13) 



()f the now derived (luantities only \i and / are of use for the 

 calculation of the two unknown quantities ^ and (p at the critical 

 point. Then the value of x can be assumed to be such, that we get 



