534 Mr. L. Schwendler on the General Theory 



while a . v s/~b ^ 



S 3 = eq-^-bX 



remains the same. 



Si has an absolute maximum for b=. » , S 2 for a = ^— ; 



and S 3 for b = u + d, as stated before. 



Hence we know what relations between the different variable 

 should not exist. 



This is all we can get from the function S. For furthei 

 relations we must look to the function D. 



For station I. we have * 



</ K" A' 



T)' — — - 



e""R'K' tfsQ 



which, again, with respect to the variations of K 7 , IV, and \' 

 may be written in three different forms :- 



K" MJB m 



TV _ 6 JV A. V VO zjr/ 



and 



TV — _ . . __ XTV 



D2 ~e' f WK' A *'* li ' 



e **> 11I s/a! 

 Considering that 



K"_ i + l" + p" 



K' "" i + V + p' ' 



1 l 



and 

 we have 



i + l' + pf 



fii r r % "> 



e l W s/a! 



J o' 4. Iff _L rJI I 



^l i- jR'Va' 



* When investigating tlie minimum absolute magnitude of S, the terms 

 could be taken without an accent, because S contains only terms belong- 

 ing to the same station. When investigating D this cannot be done, as I) 

 contains also terms belonging to the other station. 



