[ 8 + ] 
ufe of, when the denfity is greater towards the 
• c center than at the fuperficies. 
“ Since I have difcover’d, that the theorem, the 
u demonflration of which I had given in the Philo f. 
u 1 TranJ, ' for the cafe of beds fuppofed of the fame 
<£ eliipticity, lias room in an infinity of other fuppo- 
4C fitions, I have taken greater care to difcover what 
<c could have induced Sir Ifaac to think, that the 
“ earth is flatter, as the gravity is more decreafing 
u from the pole towards the equator ; and I believe 
“ I have found it out in the fecond edition of the 
“ Principle , and it is, for having built upon the 
“ fame argument as Dr. Gregory. 
“ In p. 38 6, after having obferved, that the ex- 
“ periments gave a diminution of two lines to the 
<( fecond pendulum from the pole to the equator, he 
“ argues thus: Since, fays he, the cafe of homoge- 
•“ neity afl'orded only 1 —-5 4, the difference 7-5- miles 
“ between the two diameters (which follow d from 
“ the fame hypothefis) is to be magnified in the ratio 
“ 1 T0F0 t0 2 > an d ^ wih come out 3 1 miles 
4 ‘ for the real difference. For,, purfues he, the re- 
“ tardation of the pendulum at the equator denotes 
4 ‘ the diminution of the gravity in that place and the 
lighter the matter is there, the higher will it rife 
“ to be equiponderant with that of the pole. 
“ Further, p. 387, examining the meafures of the 
“ degrees of latitude made in France by M. Caffini, 
“ by which the earth is higher at the pole than 
4 ‘ at the equator by about 95 miles, he pretends, 
44 that accordingly the pendulum fliould be longer at 
•* the equator than at the pole by about half an inch. 
“ And all that, methinks, (hews the opinion, which 
“ Sk 
