Mars And Its Canals
Percival Lowell
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Mars And Its Canals

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MARS AND ITS CANALS by PERCIVAL LOWELL . Originally published in 1911. PREFACE: ELEVEN years have elapsed since the writers first work on Mars was published in which were recorded the facts gleaned in his research up to that time and in which was set forth his theory of their explana tion. Continued work in the interval has confirmed the conclusions there stated sometimes in quite unexpected ways. Five times during that period Mars has approached the earth within suitable scan ning distance and been subjected to careful and prolonged scrutiny. Familiarity with the subject, improved telescopic ...