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THE

POPULAR SCIENCE

D.

MONTHLY.

CONDUCTED BY E. L. AND W. J. YOUMANS.

VOL. XXIV.

NOVEMBER, 1883, TO APRIL, 1884.

NEW YORK:

APPLETON AND COMPANY,

1, 3, AND 5 BOND STREET.

1884.

COPYRIGHT, 1884,
BY D. APPLETON AND COMPANY.

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