The New Astronomy

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THE NEW ASTRONOMY
SAMUEL PIERPONT LANGLEY, Ph.D., LL.D.
DIRECTOR OF THE ALLEGHENY OBSERVATORY, MEMBER NATIONAL ACADEMY, FELLOW ROYAL ASTRONOMICAL SOCIETY, ETC., ETC.
Illustrated
BOSTON. TICKNOR AND COMPANY 211 Tremont Street 1888
Copyright, 1884, 1885, 1886, and 1887, by the Century Co.; and 1887, by S. P. Langley.
All rights reserved.
University Press: John Wilson and Son, Cambridge.
I have written these pages, not for the professional reader, but with the hope of reaching a part of that educated public on whose support he is so often dependent for the means of extending the boundaries of knowledge.