COFFIN. — EDGE CORRECTIONS IN CONDENSERS. 437 



.*. Using the expression (e) we have 



v , T, *zm m 2 + 1 , / , 7rmz\ (m — l) 2 



_ <"L±Ii ! log {m + ,) + <t±A Iog 4]. (g) 



The expression for m — 1 or a = should reduce to the known expres 

 siou. It becomes 



* = 47>sL 1 + T + l0 H ,+ XjJ 



which is identical with bis result. 



