( * 4 * ) 
<* which is near the Poles, will not ad fo ftrongly in 
c< the one Place as in the other, and confequently Bo- 
u dies will not be fo heavy under the ./Equator as at 
ct the Poles. If the Circle * M P CLP rcprefent 
*< the Earth, M Qj:he .Equator, and P P the Poles, if 
*< C be a Body in the ./Equator, it is evident that it will 
« be pull’d by two contrary Forces ^ namely, that of 
« its Gravity, which pulls it towards the Center, and 
« that of its Centrifugal Force, which pulls it from it. 
« Now, if both thefe" Forces were equal, it is evident 
* it wou’d go neither of thefe Ways-, but if one were 
“ ftronger than the other, it wou’d move where the 
64 ftrongeft Force pulls it, but only with a Velocity 
« which is proportional to the Differences of thefe two 
“ Forces, and therefore it wou’d not defcend fo fall as 
“ if there were no Centrifugal Force, pulling againftit; 
« that is, a Body in the .Equator, does prefs lefs towards 
u the Center, than at the Pole, where there is no Cen- 
“ trifugal Force to leffen its Gravity. Bodies therefore, 
*c of the fame Denfity, are not fo heavy in one Place as 
« in the other. 
“ Nowin afpherical Fluid, all whofe Parts gravitate 
« towards the Center, I think it is evident from the 
<c Principles of Hydroftaticks and Fluidity, that all thofe 
U Bodies, which are equally diftant from the Center, 
£C mufl be equally prefs’d with the Weight of the incum- 
« bent Fluid, and if one Part come to be more prefs’d 
« than another, that which is moff prefs’d will thruft 
ci that out of its Place which is lead, till all the Parts 
« come to an ^Equilibrium one with another \ and this 
is known by a common and eafy Experiment, if you 
take a recurv’d Tube, f and fill it with Water or any 
“ other Fluid, it will rile equally in both Legs of the 
* Fig. i. 
M m 2 
I Fig II, 
“ Tube, 
