Page:Popular Science Monthly Volume 21.djvu/5

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THE

 

POPULAR SCIENCE

 

MONTHLY.






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




VOL. XXI.

MAY TO OCTOBER, 1882.




NEW YORK:
D. APPLETON AND COMPANY,

1, 3, and 5 BOND STREET.
1882.