CONTENTS. 
GEOLOGICAL. 
CHAPTER PAGE 
I. 
Introduction. 
1 
11. 
The Earth-book. 
4 
III. 
The Arch^an Age. 
12 
IV. 
The PRE-ARCH.a]AN Age. 
17 
V. 
What before the Molten Globe? 
22 
VI. 
The Era of Ancient Life—Silurian and 
De- 
voNiAN Ages. 
33 
VII. 
The Era of Ancient Life—Carboniferous 
Age 
48 
VIII. 
The Age of Great Reptiles 
65 
IX. 
The Age of Great Mammals 
73 
X. 
When did Man Appear? . . . . 
• 
84 
METEOROLOGICAL. 
XL 
The Ocean in which We Live 
89 
XII. 
The Clouds above Us . 
98 
XIIT. 
Winds. 
107 
XIV. 
Observations on High Currents . 
123 
XV. 
Cyclones and Anticyclones .... 
124 
ASTRONOMICAL. 
XVI. 
Looking beyond the World . . . . 
136 
XVII. 
The Stars about Us . 
144 
XVIII. 
The Constellations. 
151 
XIX. 
Two Great Lights. 
169 
XX. 
Celestial Travelers. 
181 
XXL 
The Universal Force. 
197 
XI 
