MARS AND ITS CANALS

Mars’ Hill

MARS

AND ITS CANALS

PERCIVAL LOWELL

DIRECTOR OF THE OBSERVATORY AT FLAGSTAFF, ARIZONA; NON-RESIDENT
PROFESSOR OF ASTRONOMY AT THE MASSACHUSETTS INSTITUTE OF
TECHNOLOGY; FELLOW OF THE AMERICAN ACADEMY OF ARTS AND
SCIENCES; MEMBRE DE LA SOCIÉTÉ ASTRONOMIQUE DE FRANCE;
MEMBER OF THE ASTRONOMICAL AND ASTROPHYSICAL SOCIETY
OF AMERICA; MITGLIED DER ASTRONOMISCHEN GESELLSCHAFT;
MEMBRE DE LA SOCIÉTÉ BELGE D’ASTRONOMIE; HONORARY
MEMBER OF THE SOCIEDAD ASTRONOMICA DE MEXICO;
JANSSEN MEDALIST OF THE SOCIÉTÉ ASTRONOMIQUE
DE FRANCE, 1904, FOR RESEARCHES ON MARS;
ETC., ETC.

ILLUSTRATED

New York

THE MACMILLAN COMPANY

LONDON: MACMILLAN & CO., Ltd.

1906

By THE MACMILLAN COMPANY.

Set up and electrotyped. Published December, 1906.

Norwood Press

J. S. Cushing & Co.—Berwick & Smith Co.

Norwood, Mass., U.S.A.

G. V. SCHIAPARELLI

THE COLUMBUS OF A NEW PLANETARY WORLD

THIS INVESTIGATION UPON IT

IS APPRECIATIVELY

INSCRIBED

vii

PREFACE

Eleven years have elapsed since the writer’s firstwork on Mars was published in which were recordedthe facts gleaned in his research up to that timeand in which was set forth a theory of their explanation.Continued work in the interval has confirmedthe conclusions there stated; sometimes in quiteunexpected ways. Five times during that periodMars has approached the earth within suitable scanningdistance and been subjected to careful andprolonged scrutiny. Familiarity with the subject,improved telescopic means, and long-continued traininghave all combined to increased efficiency in theprocuring of data and to results which have beenproportionate. A mass of new material has thusbeen collected,—some of it along old lines, some ofit in lines that are themselves new,—and both haveled to the same outcome. In addition to thus pushinginquiry into advanced portions of the subject,study has been spent in investigation of the realityof

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MARS AND ITS CANALS

PREFACE

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