[ *,« ] 
conceived to be otherwife arranged and difpofed, fo 
as that the Proportion of Sir Ifaac fhall be agreeable 
to the Truth. 
XXV. As to Dr. Gregory , who has attempted to 
comment upon this Paflagc of Sir Ifaac , I think I have 
demonftrated, that he has committed a Paraiogifm. 
He fays {Element. Aftronom. Lib. III. §. VIII. Prop. 
LII. Schol.) that if the Earth is denfer towards the 
Centre, or if (for Example) it has a Nucleus of greater 
Weight than 'the other Parts, the Diminution of Gra- 
vity from the Pole towards the Equator fhall be greater 
than if the whole were of the fame Dcnfity $ and in 
this he is right. But he is in the wrong (I think) im- 
mediately to conclude from thence, that the Earth 
has a greater Flatndfs. Whence can he conclude this ? 
It can be only from that Propofition of Sir Ifaac which 
informs us, that Gravity is in a reciprocal Ratio of the 
Diftancesi becaufe he gave us the Propofition but the 
Page before, as a Method for determining the Tigure 
of the Earth. But we are not allow'd to make ufe 
of this Propofition in this Cafe, becaufe it »has been 
fhewn, Art. XVIII. that it can take Place only on 
the Suppofition of a homogeneous Splieroid. There- 
fore, &c. 
XXVI. It 'will not be very difficult, without any 
Regard had to the foregoing Theory, to find the Ratio 
of the Axes of a Spheroid, which we may fuppofe to 
ihave a Nucleus at the Centre, of greater Denfity than 
the reft of the Planet^ and hence we fhall be eafily 
aflured of Dr. Gregory's Miftake. 
XXVIL Setting afide all Attraction of the Parts -of 
Matter, if the Aftion of Gravity is directed towards a 
Centre, and is in the reciprocal Ratio of the Squares 
