CHAPTER II

.--THE INDUCTIVE EPOCH OF NEWTON.--DISCOVERY OF THE

UNIVERSAL GRAVITATION OF MATTER, ACCORDING TO THE LAW OF THE INVERSE SQUARE OF THE DISTANCE. 399

1. Sun's Force on Different Planets. 399 2. Force in Different Points of an Orbit. 400 3. Moon's Gravity to the Earth. 402 4. Mutual Attraction of all the Celestial Bodies. 406 5. " " " Particles of Matter. 411 Reflections on the Discovery. 414 Character of Newton. 416

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