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THE
POPULAR SCIENCE
MONTHLY.
CONDUCTED BY E. L. YOUMANS.
VOL. II.
NOVEMBER, 1872, TO APRIL, 1873.
NEW YORK:
D. APPLETON AND COMPANY,
549 & 551 BROADWAY.
1873.
THE
POPULAR SCIENCE
MONTHLY.
CONDUCTED BY E. L. YOUMANS.
VOL. II.
NOVEMBER, 1872, TO APRIL, 1873.
NEW YORK:
D. APPLETON AND COMPANY,
549 & 551 BROADWAY.
1873.