| A WHIRLING SPIRAL NEBULA, TYPICAL OF THAT FROM WHICH THE SUN AND PLANETS WERE PROBABLY EVOLVED | Frontispiece | | MAP SHOWING THE CONSTELLATIONS OF THE ZODIAC AND THE LINE OF THE ECLIPTIC RUNNING THROUGH THEM | Facing p. 76 | | THE LOVELY CRESCENT THAT VENUS SHOWS WHEN TO OUR VIEW SHE IS AT HER GREATEST BRILLIANCY | "??136 | | RELATIVE APPARENT SIZE OF VENUS AT DIFFERENT PHASES OF ILLUMINATION | Page 137 | | THE TWO PHASES OF MARS | Facing p. 152 | | MARS: DIFFERENCE IN ITS APPARENT SIZE AT ITS NEAREST, MIDDLE, AND FARTHEST DISTANCE FROM THE EARTH | Page 169 | | JUPITER, THE MAMMOTH MEMBER OF THE SOLAR FAMILY—LARGER THAN ALL THE OTHER PLANETS PUT TOGETHER | ?Facing p. 184 | | SATURN AND ITS RINGS | "??220 |
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