BOOK I. THE GEOMETRICAL PERIOD 1. PRIMITIVE ASTRONOMY AND ASTROLOGY 2. ANCIENT ASTRONOMY—CHINESE AND CHALDÆANS 3. ANCIENT GREEK ASTRONOMY 4. THE REIGN OF EPICYCLES—FROM PTOLEMY TO COPERNICUS BOOK II. THE DYNAMICAL PERIOD 5. DISCOVERY OF THE TRUE SOLAR SYSTEM—TYCHO BRAHE—KEPLER 6. GALILEO AND THE TELESCOPE—NOTIONS OF GRAVITY BY HORROCKS, ETC. 7. SIR ISAAC NEWTON—LAW OF UNIVERSAL GRAVITATION 8. NEWTON’S SUCCESSORS—HALLEY, EULER, LAGRANGE, LAPLACE, ETC. 9. DISCOVERY OF NEW PLANETS—HERSCHEL, PIAZZI, ADAMS, AND LE VERRIER…
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