[CHAPTER XI]
AETHER AND KEPLER'S LAWS
| ART. | [102]. | AETHER AND KEPLER'S FIRST LAW | [256] |
| " | [ 103]. | AETHER AND KEPLER'S SECOND LAW | [260] |
| " | [ 104]. | AETHER AND KEPLER'S THIRD LAW | [263] |
| " | [ 105]. | ORBITAL MOTION OF PLANETS | [266] |
| " | [ 106]. | ECCENTRICITY OF THE MOON'S ORBIT | [268] |
| " | [ 107]. | THE SUN AND KEPLER'S FIRST LAW | [270] |
| " | [ 108]. | THE SUN AND KEPLER'S SECOND LAW | [274] |
| " | [ 109]. | AETHER AND THE PLANE OF THE ECLIPTIC | [277] |
| " | [ 110]. | AETHER AND THE CENTRIPETAL FORCE | [282] |
[CHAPTER XII]
AETHER AND COMETS
| ART. | [111]. | WHAT IS A COMET? | [291] |
| " | [ 112]. | ORBITS OF COMETS | [293] |
| " | [ 113]. | KINDS OF COMETS | [296] |
| " | [ 114]. | PARTS OF A COMET | [298] |
| " | [ 115]. | CENTRIFUGAL FORCE AND COMETS | [300] |
| " | [ 116]. | FORMATION OF TAILS | [303] |
[CHAPTER XIII]
AETHER AND STARRY WORLD
| ART. | [117]. | STARRY WORLD | [306] |
| " | [118]. | STARS AND KEPLER'S LAWS | [309] |
| " | [119]. | AETHER AND NEBULAE | [313] |
| " | [120]. | WHAT IS A NEBULA? | [314] |
| " | [121]. | AETHER AND NEBULAR HYPOTHESIS | [317] |
| " | [122]. | KINDS OF NEBULAE | [319] |