THE

POPULAR SCIENCE

MONTHLY.

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

VOL. XVII.

MAY TO OCTOBER, 1880.

D.

NEW YORK:

APPLETON AND COMPANY,

1, 3, AND 5 BOND STREET.

1880.

COPYRIGHT BY

D. APPLETON AND COMPANY,

1880.

Barker, George F., Modern Aspects of the Life-Question..
Barnard, W. S., Zoological Education....

750

666

Bellesme, M. J. de, How Insects direct their Flight...

114

"England: Her People, Polity, and Pursuits" (Escott). "The Interoceanic Canal and the Monroe Doctrine" VOL. XVII.-55

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