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LIST OF ILLUSTRATIONS
xiii
PAGE
The Volcano Colima, Mexico, March 24, 1903 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
169 |
Jukes Butte, a Denuded Laccolith, as seen from the Northwest . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
170 |
Ideal Section of a Laccolith . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
170 |
Earth as seen from above.—Photographed at an Altitude of 5500 Feet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
183 |
Tracks of Sauropus Primævus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
188 |
Adventures of a Heat Ray . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
193 |
Polar Caps of Mars at their Maxima and Minima . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
198 |
Glacial Map of Eurasia . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
200 |
Map showing the Glaciated Area of North America . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
201 |
Photograph of the Moon . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
205 |
Petrified Bridge, Third Petrified Forest, near Adamana, Arizona . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
210 |
Three Views of Venus, showing Agreement at Different Distances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
220 |
Diagram of Libration in Longitude due to Rotation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
222 |
Moon,—Full and Half . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
225 |
Diagram illustrating Molecular Motion in a Gas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
227 |
Distribution of Molecular Velocities in a Gas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
229 |