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AN ESSAY

ON THE

PRINCIPLES AND CONSTRUCTION

OF

MILITARY BRIDGES,

AND THE

Damage of Httotr#

IN

MILITARY OPERATIONS.

BY

Major-General Sir HOWARD DOUGLAS , Bt.

K.S.C. C.B. D.C.L. Oxf. F.R.S. &c. 1

SECOND EDITION,

CONTAINING MUCH ADDITIONAL MATTER.

A

LONDON :

THOMAS AND WILLIAM BOONE, 29, NEW BOND STREET.

MDCCCXXXII.