THE

MECHANICAL PRINCIPLES

OF

ENGINEERING

AND

ARCHITECTURE.

BY

HENRY MOSELEY, M.A. F.R.S.

CHAPLAIN IN ORDINARY TO THE QUEEN, CANON OF BRISTOL, VICAR OF OLVESTON ;

CORRESPONDING MEMBER OF THE INSTITUTE OF FRANCE, AND FORMERLY PROFESSOR

OF NATURAL PHILOSOPHY AND ASTRONOMY IN KING'S COLLEGE, LONDON.

Second American from Second London Edition

WITH ADDITIONS BY

D. H. MAHAN, LL.D.

U. S. MILITARY ACADEMY.

WITH ILLUSTRATIONS ON WOOD.

NEW YORK:

JOHN WILEY & SON,

13 ASTOR PLACE.