114 o 



+ d -l(Nz — Sec. -+- iVV — &c. H- N'U'; — &c. ) + &c. 



< // // " • " z o \ 



+ m I Tt H &c) 



»'-. ■ J 



d -,z , , <*• * * ' o 



*/' (p { - -T~ J &c. -t- pY - -^ + &c. 



,•11 a • t z 





V^'tVr — &c. 4- //-&C.-4-VY — &c.)-+-&c.Scc. 



dt s *■ <■ l 



1 dt d? 



_, , d.M'z' rf-.NV - v * 



d.W'z" • d>.N"z" 



■ ~*~ L * ~~~dT~- + tyP " ~ &c * 



v = l l J, «r — 7,1 6cc - 



d . &'-' d x .ri z' 



* l I - Wffpo. rt; n&l &c ' 



rt«! a- -7,— + -7,> &c - &c * 



1 dt dt' 



^.x { -— -H _ dtX _ etc. Co. 



Suppofant done K = ; T' = o ,- T" = o fcc. oil aura 



