xxvi CONTENTS OF THE FIRST VOLUME. 



BOOK II. 



HISTORY OF THE PHYSICAL SCIENCES IN ANCIENT 

 GREECE. 



PAGR 



Introduction 95 



CHAPTER I. EARLIEST STAGES OF MECHANICS AND 

 HYDROSTATICS. 



Sect. 1. Mechanics . . .97 



Sect. 2. Hydrostatics . . . . . . 101 



CHAPTER II. EARLIEST STAGES OP OPTICS . 105 



CHAPTER III. EARLIEST STAGES OF HARMONICS . 109 



BOOK III. 



HISTORY OF GREEK ASTRONOMY. 

 Introduction . . . . . .121 



CHAPTER I. EARLIEST STAGES of ASTRONOMY. 



Sect. 1. Formation of the Notion of a Year . . .123 

 Sect. 2. Fixation of the Civil Year . . . 126 



Sect. 3. Correction of the Civil Year. (Julian Calendar) . 132 

 Sect. 4. Attempts at the Fixation of the Month . . 135 

 Sect. 5. Invention of Lunisolar Years .... 138 



Sect. 6. The Constellations 145 



Sect. 7- The Planets 149 



Sect. 8. The Circles of the Sphere . .153 



Sect. 9. The Globular Form of the Earth . . 159 



Sect. 10. The Phases of the Moon . . . . 163 



Sect. 11. Eclipses 164 



Sect. 12. Sequel to the Early Stages of Astronomy . 167 



CHAPTER II. PRELUDE TO THE INDUCTIVE EPOCH OF 



HIPPARCHUS 170 



CHAPTER III. INDUCTIVE EPOCH OF HIPPARCHUS. 



Sect. 1. Establishment of the Theory of Epicycles and 



Eccentrics . . . . . . . 1H2 



