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

The Ways of the Planets · 第 21 / 101 题