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BOOK II.

CONCERNING tHfe

SYSTEM of the WORLD*

C H A j?. t;

That the Planets moVe in a {pace empty ofall fenlible matter*

I IA V E now gone through thefirft part of my defign, and have ex-plained, as far as the nature of myundertaking would permit* whatSir I s a a c Newton has deliveredin general concerning the motionof bodies. It follows now to fpeakof the difcoveries, he has made in the fyftem of the world;

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