THE

THEORY AND PRACTICE

ОР

SURVEYING;

CONTAINING

ALL THE INSTRUCTIONS REQUISITE FOR THE SKILFUL
PRACTICE OF THIS ART.

WITH A NEW SET OF ACCURATE

MATHEMATICAL TABLES.

BY ROBERT GIBSON.

ILLUSTRATED BY COPPER-PLATES.

NEWLY ARRANGED, IMPROVED, AND ENLARGED, WITH USEFUL
SELECTIONS,

BY JAMES RYAN,

AUTHOR OF AN ELEMENTARY TREATISE ON ALGEBRA; THE NEW AMERICAN
GRAMMAR OF ASTRONOMY; THE DIFFERENTIAL AND
INTEGRAL CALCULUS, &c. &c.

HARTFORD:

ALFRED S. BARNES & CO.