Fig. 13. 



ECLIPSES. 



CHAPTER I. 



Mutual interposition of celestial objects. 2. Their mutual obscuration. 

 3. Eclipses, transits, and occultations. 4. Solar eclipse. 5. Lunar 

 eclipse. 6. Transit of a planet. 7. Occultation of a fixed star. 8. 

 Appearance produced by transit of an inferior planet. SOLAR ECLIPSES : 



9. Effects of the relative magnitude of the discs of the sun and moon. 



10. Conditions which determine eclipses. 11 . Conditions under which 

 an eclipse does not take place. 12. Condition of external contact. 13. 

 Condition of partial eclipse determination of its magnitude. 14. In- 

 ternal contact. 15. Annular eclipse. 36. Total eclipse. 17. Greatest 

 possible duration of a total eclipse. 18. Condition of annular 

 eclipses. 19. Greatest possible duration of annular eclipses. "20. 

 Solar eclipses can only occur at or near a new moon. 21. Effects of 

 parallax. 22. Data which determine the circumstances of eclipses. 

 23. Solar ecliptic limits. 24. Anecdote of Columbus. 25. Baily's 

 beads. 26. These appearances produced by lunar mountains. 

 27. Flame-like protuberances round the dark disc of the moon. 



LARDNER'S MUSEUM OP SCIENCE. M 161 



No. 154. 



