188 ESSAYS anp OBSERVATIONS 
THEoR. I. 
THe gravity towards an oblate fpheroid 
in the axis produced, decreafes in a lefs 
proportion than that in which the {quare of 
the diftance from the center increafes: but 
the gravity in the plane of the equator de- 
creafes in a higher proportion than that in 
which the fquare of the diftance increafes. 
TuHeor. II. 
Let 4 denote the femidiameter of the e- 
quator, c the diftance of the focus of the ge- 
nerating ellipfe from the center, d the di- 
ftance of any body from the center of the 
fpheroid in the plane of the equator; and the 
gravity at the diftance d, will be to the gra- 
vity at the diftance 4, as /— ee ad 
i , Xt Hod sea 
ore. tO 1 +iop +560 oc. *** 
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