( io 4 ) 
Axis and equatoreal Diameter, as 19 1 to Unity ; and 
thence (by Article 4 ) as the mean Gravity on the 
Surface to the centrifugal Force at the Equator, fo 
is 191 to 4, or fo is 239 to Unity. In order to 
ihevv that this cannot be, I fliall obferve, that when 
the Moon’s Diftance was fuppofed 60 Semidiameters 
of the Earth (as in Article 5.) it was found that the 
mean Force of Gravity was to the centrifugal Force 
at the Equator, as 289 to 1. But if the Proportion 
now found be true, the Moon’s Diftance of 60 Semi- 
diameters muft be augmented in the fubtriplicate 
Proportion of 189 to 239, and then it will become 
64 Semidiameters. In the like manner, if we com- 
pute the Ratio of the mean Force of Gravity to 
the centrifugal Force, by prefuppofing the Mag- 
nitude of the Earth, as Sir Ifaac Newton and 
Mr. Hngens did, we muft fuppofe a Degree to be 
above 80 Englijh Miles to bring it out 239 to 
Unity. Now whereas it is certain that the Diftance 
of the Moon is about 60 Semidiameters of the 
Earth, and that a Degree is lefs than 70 Englijh 
Miles ; therefore, I fay, that the Conclufion which 
feems to follow from the Jamaica Experiment, 
cannot be allowed to be true. And the Experi- 
ments made by Richer , in the Ifland of Cayenna , 
would ftill make a greater Difference betwixt the 
Diameters of the Earth, than thofe made in Jamaica. 
And the Lengths of the Taris and London Pendu- 
lums compared together, would make it greater 
than one 231 Part of the Whole, as it was found 
in Article 5*. 
8. From all the Experiments made with Pendu- 
lums, it appears that the Theory makes them ionger 
ia 
* 
