280 Mr. S. Butterworth on a Method for 



Using these values in (6 a), (6 b), and (6 d) we find :■ 

 From (6 a) 



M ,./. . 3 2 ,,„. . 3 2 .5 2 



47rv/A 

 in which 



S =^(^o^|^%+^^ 2 + ...), (0) 



*o=log p -2 



*!-*)- j- 3 



92 — 91- 2~"5 



*» 0»-i ~ n 2w + 1 ~ <2n + 1) 



From (6 5) 

 M 



4ttVA 



in which 



= = J-(»v + J w + FtS*"*' + ral*' 6 * 8 ' + • • •)' (D ) 



<*»<>' = logp -2 

 9i — 9o — f + 1 



A' A' * 2 



92 —91 =2 — 1 



A' A'- 1 2 

 93-92-3-3 



A' A' - 1 2 



9» ~ 9»-i— r, — 



3 



n 2« -3 n(2n-3) -> 



From (6 d) 



M . „ . 1. 3 1.,, P.3.5 1 „ , V . g . 5 . 7 1 „ 



(E) 



