THE WINDMILL

AS A PRIME MOVER.

BY

ALFRED R. WOLFF, M.E.,

CONSULTINg engineer, MEMBER AMERICAN SOCIETY OF MECHANICAl engineeRS,

ETC.

SECOND EDITION.

FIRST THOUSAND.

UNIV. OF

NEW YORK:

JOHN WILEY & SONS,

43-45 EAST 19TH STREET.

1900.

LIBRARY

UNIVERSITY OF CALIFORNIA
DAVIS