CONTENTS OF THE FIRST VOLUME. xxix 



PACK 



CHAPTER III. SEQUEL TO COPERNICUS. THE RECEPTION 

 AND DEVELOPEMENT OF THE COPERNICAN THEORY. 



Sect. 1. First Reception of the Copernican Theory . . 401 

 Sect. 2. Diffusion of the Copernican Theory . . 404 



Sect. 3. The Heliocentric Theory confirmed by Facts. 



Galileo's Astronomical Discoveries . .412 

 Sect. 4. The Copernican System opposed on Theological 



Grounds ,/i 418 



Sect. 5. The Heliocentric Theory confirmed on Physical 

 Considerations. (Prelude. to Kepler's Astro- 

 nomical Discoveries.) . V . . 426 



CHAPTER IV. INDUCTIVE EPOCH OF KEPLER. 



Sect. 1. Intellectual Character of Kepler . . . 432 



Sect. 2. Kepler's Discovery of his Third Law . . ^ 437 

 Sect. 3. Kepler's Discovery of his First and Second Laws. 



Elliptical Theory of the Planets . -'' ; . . 443 



CHAPTER V. SEQUEL TO THE EPOCH OF KEPLER. RECEPTION, 

 VERIFICATION, AND EXTENSION OF THE ELLIPTICAL THEORY. 



Sect. 1. Application of the Elliptical Theory to the Planets 453 

 Sect. 2. Application of the Elliptical Theory to the Moon . 455 

 Sect. 3. Causes of further Progress of Astronomy . . 458 



