| | PAGE |
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| Preface | | [vii] |
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| [PART I] |
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| NATURAL FEATURES |
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| CHAPTER | | |
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| I. | On Exploration | [3] |
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| II. | A Departure-point | [12] |
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| III. | A Bird’s-eye View of Past Martian Discovery | [20] |
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| IV. | The Polar Caps | [32] |
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| V. | Behavior of the Polar Caps | [41] |
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| VI. | Martian Polar Expeditions | [54] |
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| VII. | White Spots | [73] |
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| VIII. | Climate and Weather | [82] |
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| IX. | Mountains and Cloud | [96] |
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| X. | The Blue-green Areas | [108] |
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| XI. | Vegetation | [119] |
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| XII. | Terraqueousness and Terrestriality | [128] |
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| XIII. | The Reddish-ochre Tracts | [148] |
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| XIV. | Summary | [159] |
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| [PART II] |
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| NON-NATURAL FEATURES |
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| XV. | The Canals | [173] |
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| XVI. | Their System | [184] |
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| XVII. | Gemination of the Canals | [192] |
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| I. | The Diplopic Theory | [196] |
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| II. | The Interference Theory | [201] |
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| III. | The Illusion Theory | [202] |
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XVIII. | The Double Canals | [204] |
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| XIX. | Canals in the Dark Regions | [243] |
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| XX. | Oases | [249] |
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| XXI. | Carets on the Borders of the Great Diaphragm | [265] |
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| XXII. | The Canals Photographed | [271] |
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| [PART III] |
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| THE CANALS IN ACTION |
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| XXIII. | Canals: Kinematic | [281] |
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| XXIV. | Canal Development Individually Instanced | [304] |
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| XXV. | Hibernation of the Canals | [313] |
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| XXVI. | Arctic Canals and Polar Rifts | [325] |
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| XXVII. | Oases: Kinematic | [330] |
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| [PART IV] |
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| EXPLANATION |
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| XXVIII. | Constitution of the Canals and Oases | [337] |
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| XXIX. | Life | [348] |
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| XXX. | Evidence | [360] |
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| XXXI. | The Husbanding of Water | [366] |
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| XXXII. | Conclusion | [376] |
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| INDEX | | [385] |