C 3 
fer’d to 7 t n Z. Then the Space 7rZ nr will be the 
only Part of Rnrx, which will attract the Body N 
according to HY. 
To find the Attraction of this little Space, ■fre will 
fuppofe it to be divided into the Elements TtsS, the 
Attractions of which, according to HY, will be 
or ~ HY nt» X ^ T ' the Fluent of which 
iHVxH QTz is the Attraction of TZrS, according 
to HY. In which if we put n v for H Q> we fhall have 
"HtR^hy , iHYxnffxc. for the Attraction 
ITT? ot nt3 
required. 
IX. It is eafy to perceive, that if, inftead of a Circle, 
the Curve R n r were an Ellipfis, or any other Curve 
whofe Axes were but very little different from one 
another, the foregoing Solution would be ftill the 
lame. 
Problem. V. 
To find the Attraction which an Elliptical Spheroid 
KLk (Fig. f.) exerts upon a Corpufcle placed with- 
out its Surface at N, according to the "Direction 
CX perpendicular to CN. 
X. To perform this, we will begin by drawing the 
Diameter Cpy, which bifeCts the Lines Rr perpendi- 
cular to CN; and the Ratio of CH to HY fhall be 
call’d n. Then efteeming the Ellipfis Rr as a Circle, 
(fee the foregoing Article) we fhall have by the Pro- 
blem aforegoing ;ncxRH* xCH p or j ts Attraction, 
O o 
according 
