37O On the Attraction of Ellipsoids. 



But 



G p = Up and Q e = R e - w 2 a ; 



90- A 



CA 



Eliminating -^- by means of equation (17), we get 



d 



G p -G e _ 5 a? a 



~GT~ f 2 G. ' 



or 



G v G e o 



~ 



,, QX 



