OF

POPULAR LITERATURE AND SCIENCE.

OLD SERIES, VOL. XXVII.-NEW SERIES, VOL. I.

DROT

PHILADELPHIA:

J. B. LIPPINCOTT & CO.

1881.

LIPPINCOTT'S PRESS,

Philadelphia.

Entered according to Act of Congress, in the year 1881, by

J. B. LIPPINCOTT & CO.,

In the Office of the Librarian of Congress, at Washington.