CONTENTS.
CHAPTER PAGE
Introduction, [v]
Earth.
I. World-Building and Life, [1]
II. Limestone, [12]
III. Coal, [22]
IV. Slate and Shale, [31]
V. Salt, [36]
Air.
VI. The Atmosphere, [42]
VII. Air Temperature, [51]
VIII. Cloud Formation, [60]
IX. Cloud Formation (Continued), [69]
X. Wind—Why It Blows, [79]
XI. Wind (Continued), [88]
XII. Local Winds, [100]
XIII. Weather Predictions, [110]
XIV. How Dew Is Formed, [115]
XV. Hailstones and Snow, [124]
XVI. Meteors, [129]
XVII. The Sky and Its Color, [134]
XVIII. Liquid Air, [146]
Water.
XIX. Rivers and Floods, [152]
XX. Tides, [161]
XXI. What Is a Sponge? [167]
XXII. Water and Ice, [177]
XXIII. Stored Energy in Water, [182]
XXIV. Why Does Ice Float? [192]
XXV. Glaciers, [198]
XXVI. Evidences and Theories of an Ice Age, [207]
XXVII. Glacial and Preglacial Lakes and Rivers, [217]
XXVIII. Some Effects of the Glacial Period, [230]
XXIX. Drainage before the Ice Age, [239]