AS APPLIED TO

THE DRAWING OF

FORTIFICATION AND STEREOTOMY.

FOR THE USE OF

THE CADETS OF THE U. S. MILITARY ACADEMY.

BY

D. H. MAHAN, LL.D.,

PROFESSOR OF FORTIFICATION, CIVIL ENGINEERING, &C., UNITED STATES MILITARY ACADEMY,

NEW EDITION, WITH ADDITIONS.

NEW YORK:

JOHN WILEY & SON

15 ASTOR PLACE.

1873.

Entered, according to Act of Congress, in the year 1864, by

D. H. MAHAN,

In the Clerk's Office of the District Court of the United States for the Southern District of New York,

PoOLE & MACLAUCHLAN, PRINTERS AND BOOKBINDERS, 205-213 East Twelfth St.,

NEW YORK.