Astronomy for Young Folks

by Isabel Martin Lewis

ASTRONOMY
FOR YOUNG FOLKS

Northern Portion of the Moon at Last Quarter

Taken with 100-inch Hooker Telescope of the Mt. Wilson Observatory (See Chapter XXI)

ASTRONOMY
for
YOUNG FOLKS

BY

ISABEL MARTIN LEWIS, A. M.
(Connected with the Nautical Almanac Office of the U. S. Naval Observatory)

NEW YORK
DUFFIELD AND COMPANY
1922