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PROFESSOR OF MILITARY AND CIVIL ENGINEERING IN THE
NEW EDITION, MOSTLY REWRITTEN,
AND AUGMENTED WITH MANY ADDITIONAL SUBJECTS AND PLATES.
WILEY & PUT NAM,
In the Clerk's Office of the District Court of the United States for the Southem
District of New York.
The present Edition of this Work, like the two preceding, has been compiled for the use of the cadets of the U. S. Military Academy, and comprises that part of the Course of Civil Engineering taught them which the Author deemed would prove the most useful to pupils in other seminaries, studying for the profession of the civil engineer.
In preparing this Edition, the Author has found it necessary to recast and rewrite the greater portion of the work; owing to the considerable additions made to it, and called for by the vast accumulation of important facts since the publication of the former editions. A new form has also been given to the work, in the substitution of wood-cuts in the body of it for the plates in the former editions, as better adapted to its main object as a text-book. From these additions and changes, the Author trusts that the work will be found to contain all of the essential