| | Page | | I. | Introduction | 1 | | II. | Immeasurable Distances of Space | 7 | | III. | Other Worlds Inhabited | 14 | | IV. | Lowell's Book on Mars | 31 | | V. | Testimony of Astronomers | 51 | | VI. | The Study of Planetary Markings | 70 | | VII. | Difficulties of Seeing | 79 | | VIII. | Variation in Drawing | 94 | | IX. | Theories Regarding the Canals | 100 | | X. | Comments and Criticism | 125 | | XI. | Atmosphere and Moisture | 134 | | XII. | Notes on Irrigation | 141 | | XIII. | Variety of Conditions under which Life Exists | 147 | | XIV. | My Own Work | 158 | | XV. | What the Martians Might Say of Us | 166 | | XVI. | Schiaparelli, Lowell, Perrotin, Thollon | 172 | | XVII. | Last Words | 180 | | Index | 189 |
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