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HE Dicoveries which gain'd Sir Iaac Newton so univeral a Reputation, relate to the Sytem of the World, to Light, to Geometrical Infinities; and latly to Chronology, with which he us'd to amue himself after the Fatigue of his everer Studies.

now acquaint you (without Prolixity if poible) with the few Things I have been able to comprehend of all thee ublime Ideas. With Regard to the Sytem of our World, Diputes were a long Time maintain'd, on the