228 Proceedings of the Boyal Society of Edinburgh. [Sess. 
2-50 
2*51 
2-52 
2-53 
2*54 
2*55 
2*56 
2-57 
2*58 
2*59 
where 0 1 = ^ . 10 ~ 2 . 
E n i 
f i = E 1 / 1 - fx x e = se approx. 
= 1-6. «. 10- 20 . 
= — Mjp 2 approx. 
= _^!h. io- 14 . 
h 
• • • • h i =/ iP' i hA*i 
= _t r h.l0- 14 . 
h 
u =fJ\ +f'ih 
~ (E t + E 2 — /x^e — /x 2 e) ~ ($i + ^2X^1 + -^2) e (^2/ x i ^1^2) 
= - IO" 21 . 
v=f 2 h\+f 1 h' 2 
=f if 2 W 1 + 9 2 ) 
= -|( w i + w 2)* 10 ’ 14 - 
^ T \ J 2 J 
=z “I - 0 2 /^ 2 ^) 
- - 6-8 . 10- 2 . we 
I-- 10 - 42 . 
, r iu t m 
\h 1 7i 2 / 
■ ys 2 e 2 f-i- + 4-1 
U x ft' 2 / 
= -2-6.g 2 . ^ 1+? ^ 2 . 10- 
f)) 
0 
h 0 + cfiV 
_ . IO -17 
^ n \ n 2 -j a— 28 - 1 ’SftjTC* . 10 ~*°(w-, + n 2 ) 
~hT ' " r~ 
= 1‘5/i 2 . 10 11 approx. 
