CONTENTS

CHAPTER PAGE
I. A VOYAGE IN THE SKY[9]
(1) TWO HUNDRED AND FORTY THOUSAND
MILES FROM THE EARTH		[12]
(2) THIRTY-SEVEN MILLION MILES FROM THE EARTH[15]
(3) AT SEVEN HUNDRED AND FIFTY MILLION MILES[18]
(4) TWO THOUSAND FIVE HUNDRED MILLION MILES
FROM THE SUN		[20]
(5) AT TWENTY-FIVE BILLION MILES[36]
(6) AT SIXTY THOUSAND BILLION MILES[44]
(7) IN INFINITE SPACE[49]
II. THE WORLD OF LONG AGO[65]
III. THE WORLD TO COME[79]
IV. VENUS THE BEAUTIFUL[95]
V. THE PLANET MARS[111]
VI. THE GIANT WORLD OF JUPITER[123]
VII. HEARTBEATS ACROSS SPACE[131]
VIII. IDEAS CONCERNING COMMUNICATION BETWEEN THE WORLDS[141]
IX. STABS AND ATOMS[157]
X. ARE OTHER PLANETS INHABITED? (A DISCUSSION OF SCHEINER’S ARGUMENTS)[179]
GENERAL REMARKS[182]
HISTORICAL[184]
THE ORIGIN OF LIFE[193]
THE CONDITIONS OF LIFE[196]
THE PLANETS OF OUR SYSTEM[201]
THE POSSIBLE EXISTENCE OF BEINGS OF
DIFFERENT CHEMICAL CONSTITUTION		[210]
REMARKS[215]
INDEX[223]