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ESTABLISHED BY EDWARD L. YOUMANS.
APPLETON’S
POPULAR SCIENCE
MONTHLY
EDITED BY WILLIAM JAY YOUMANS
VOL. LI
MAY TO OCTOBER, 1897
NEW YORK:
D. APPLETON AND COMPANY,
1897
ESTABLISHED BY EDWARD L. YOUMANS.
APPLETON’S
POPULAR SCIENCE
MONTHLY
EDITED BY WILLIAM JAY YOUMANS
VOL. LI
MAY TO OCTOBER, 1897
NEW YORK:
D. APPLETON AND COMPANY,
1897