| | PAGE | | | Preface | | vii | | | PART I | | | NATURAL FEATURES | | | CHAPTER | | | | | I. | On Exploration | 3 | | | II. | A Departure-point | 12 | | | III. | A Bird’s-eye View of Past Martian Discovery | 20 | | | IV. | The Polar Caps | 32 | | | V. | Behavior of the Polar Caps | 41 | | | VI. | Martian Polar Expeditions | 54 | | | VII. | White Spots | 73 | | | VIII. | Climate and Weather | 82 | | | IX. | Mountains and Cloud | 96 | | | X. | The Blue-green Areas | 108 | | | XI. | Vegetation | 119 | | | XII. | Terraqueousness and Terrestriality | 128 | | | XIII. | The Reddish-ochre Tracts | 148 | | | XIV. | Summary | 159 | | | | PART II | | | NON-NATURAL FEATURES | | | XV. | The Canals | 173 | | | XVI. | Their System | 184 | | | XVII. | Gemination of the Canals | 192 | | | I. | The Diplopic Theory | 196 | | | II. | The Interference Theory | 201 | | | III. | The Illusion Theory | 202 | | | | XVIII. | The Double Canals | 204 | | | XIX. | Canals in the Dark Regions | 243 | | | XX. | Oases | 249 | | | XXI. | Carets on the Borders of the Great Diaphragm | 265 | | | XXII. | The Canals Photographed | 271 | | | | PART III | | | THE CANALS IN ACTION | | | XXIII. | Canals: Kinematic | 281 | | | XXIV. | Canal Development Individually Instanced | 304 | | | XXV. | Hibernation of the Canals | 313 | | | XXVI. | Arctic Canals and Polar Rifts | |   |
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