ELEMENTS

OF

Charles K Wead.
Sep. 215/873.

PHYSICAL MANIPULATION.

BY

EDWARD C. PICKERING,

Thayer Professor of Physics in the `Massachusetts Institute of Technology

NEW YORK:

PUBLISHED BY HURD AND HOUGHTON.
Cambridge: The Riverside Press.

1873.

Entered according to Act of Congress in the year 1873, by EDWARD C. PICKERING,

In the Office of the Librarian of Congress, Washington.