(159 ) 



TABLE I. 



TxVBLE II. 



1 + %1-rrr 

 2/ 



48 



-(1-0,5%(1-^)). 



The values calculated in this way are found in table II (see abov^e). 



The values found for i/' are even smaller than those for the first 

 branch. In both branches we clearly see the occurrence of a nia.viniuni 

 in the curves T = f [x'), from which point the value ,6'' (or y') does 

 not increase any more, but falls again to zero. 



The position of that maximum may be easily found from the 



(IT 

 general equation (4) tor — - . The tangent running vertically, the 



denominator (1 — .r) u\-{- x il\=^0 must be zero and therefore we have, 

 as we have assumed ^ to be equal to zero: 



(1 _.,) ^^ (l_^?V^) + xq, (1- ^ /i' {l-x'Y) = 0. 



Neglecting .6'' we get : 



H/) 



{l-x)q,-\-^CqJ l_^l;i')=.0, 



11 



Proceedings Roval Acad. Amsterdam. Vol. VI. 



