IN THE SECOND BOOK 



IS CONTAINED THE 



DISCOURSE OF THE WORLD, OF CELESTIAL IMPRESSIONS AND 



METEORS, AS ALSO OF THOSE THAT APPEAR IN THE 



AIR, AND UPON EARTH. 



CHAP. 



1 . Whether the World be limited ? 



and whether there be but one ? 



2. The Form of the World. 



3. The Motion of Heaven. 



4. Why the World is called Mun- 



dus? 



5. Of the Four Elements. 



6. Of the Seven Planets. 



7. Concerning God. 



8. The Nature of the fixed Stars 



and Planets : their Revolution. 



9. The Nature of the Moon. 



10. The Eclipse of Sun and Moon: 



also of the Night. 



11. The Magnitude of Stars. 



12. The divers Discoveries of Men 



and their Observations of the 

 Celestial Bodies. 



13. Of Eclipses. 



14. The Motion of the Moon. 



15. General Rules concerning Pla- 



nets and Lights. 



16. The Reason why the same 



Planets seem higher or lower 

 at sundry times. 



17. General Rules concerning the 



Planets. 



18. What is the Cause that Planets 



change their Colours ? 



19. The Course of the Sun: his Mo- 



tion : and whence proceedeth 

 the Inequality of Days. 



20. Why Lightnings are assigned 



to Jupiter. 



CHAP. 



21. The Distances between the 



Planets. 



22. The Harmony of Stars. 



23. The Geometry of the World. 



24. Of Stars appearing suddenly. 



25. Of Comets and other prodi- 



gious Appearances in the 

 Sky : their Nature, Situa- 

 tion, and Kinds. 



26. The Opinion of Hipparchus of 



the Stars, Torches, Lamps, 

 Pillars or Beams of Fire, 

 burning Darts, Gapings of 

 the Sky: with Instances. 



27. Strange Colours appearing in 



the Sky. 



28. Flames seen in the Sky. 



29. Circles or Garlands in the Sky. 



30. Of Celestial Circles and Gar- 



lands of short Duration. 



31. Of many Suns. 



32. Of many Moons. 



33. Of Nights as light as Day. 



34. Of Meteors resembling fiery 



Shields. 



35. A wonderful Appearance in 



the Sky. 



36. The extraordinary Shooting of 



Stars. 



37. Of the Stars named Castor and 



Pollux. 



38. Of the Air. 



39. Of certain set Times and Sea- 



sons. 



