( 239 ) 
I. The * Differ tat ion concerning the Figure of the Earth 
continued-, hy the eferend J. T. Defaouliers 
LL. X>. F. % S. D 
H O W the Figure of the Earth is deduc’d from the 
Laws of Gravity and Centrifugal Force, is very 
well (hewnby the late Savilian Profeifor of Aftronomy, 
Dr. John Keill , in a Book that he wrote in the Year 
1 0^)8, again!! Dr. Burnet s Fheory of the Earth i and 
therefore I lhall tranlcribe from him what he has laid 
upon that Subjecfl ; becaufe, otherwife, 1 fhou’d only fav 
the fame Thing in other Words. ^ ' 
I ovv n indeed that he has made a Miftake in that Book 
concerning the Meafurc of the Degrees of an Ellipfe • 
but I find that all that relates to-the oblate Spheroidical 
Figure of the Earth is right j and the little Difference of 
taking 15- Bans Feet for the Space that a Body falls 
tnio in a Second, inllead of 15 Feet 1 Inch and 2, Line® 
and a Number of Feet, a little lei's than true, for the 
Diameter of the Earth (which was not fo well known 
at tnat j ime) will no way invalidate hisDemonflration 
and Proof. Here follow his Words. 
To prove the Earth to be higher at the Equator 
“ than at the Poles, I will fuppofe iirlt, that, at th» B“- 
“ ginning of the World, the Earth was fluid and fpher'i- 
“ ca 1 , but afterwards God Almighty having given it a 
“ Motion round its own Axis, all Bodies upon the Earth 
“ w °u’d defcribe either the /Equator or Circles, paral- 
“ lei to the /Equator, and, by confequence, all wou’d 
£; endeavour to recede from the Center of their Motion. 
ft 
* V. Philof. Tranfacl. N. 386. 
V 0L.XXX1I1. Mm « , r 
