Page:The Solar System - Six Lectures - Lowell.djvu/9

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THE

SOLAR SYSTEM


Six Lectures

DELIVERED AT THE MASSACHUSETTS
INSTITUTE OF TECHNOLOGY
IN DECEMBER, 1902


BY


PERCIVAL LOWELL


NON-RESIDENT PROFESSOR OF ASTRONOMY AT THE
MASSACHUSETTS INSTITUTE OF TECHNOLOGY
AND DIRECTOR OF THE LOWELL OBSER-
VATORY, FLAGSTAFF, ARIZONA



BOSTON AND NEW YORK

HOUGHTON, MIFFLIN AND COMPANY

The Riverside Press, Cambridge

1903