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Rh Power acts; according to that Law, throughout all Nature; 'tis evident that as the Earth is ixty Semi-diameters ditant from the Moon, a heavy Body mut necearily fall (on the Earth) fifteen Feet in the firt Second, and fifty four thouand Feet in the firt Minute.

a heavy Body falls, in reality, fifteen Feet in the firt Second, and goes in the firt Minute fifty four thouand Foot, which Number is the Square of ixty multiplied by fifteen. Bodies therefore gravitate in an invere Ratio of the Squares of the Ditances; conequently, what caues Gravity on Earth, and keeps the Moon in its Orbit, is one and the ame Power; it being demontrated that the Moon gravitates on the Earth, which is the Center of its particular Motion, 'tis demontrated that the Earth and the Moon gravitate on the Sun which is the Center of their annual Motion.

ret of the Planets mut be ubject, to this general Law; and if this Law exits, thee Planets mut follow the Laws which Kepler dicover'd. All Rh