About This Book
The author surveys the controversy over the interpretation of Mars's surface markings, weighing astronomical observations, sketches by various observers, and arguments for and against a network of geodetic lines often called canals. He compares Martian features to terrestrial phenomena, discusses atmospheric and hydrological conditions that might permit irrigation, reviews observational difficulties and variations in drawings, critiques existing theories, and recounts his own telescope observations and drawings. The book also summarizes the testimony of leading observers and closes with reflections on what intelligent surface modification would imply.
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