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A

TREATISE

ON

PRACTICAL SURVEYING;

WHICH IS DEMONSTRATED

From its First Principles.

WHEREIN

EVERY THING THAT IS USEFUL AND CURIOUS
IN THAT ART,

IS FULLY CONSIDERED AND EXPLAINED.

BY ROBERT GIBSON.

Revised, Corrected and Adapted to the use of Schools, American Surveyors, &c.
BY JOHN D. CRAIG.

BALTIMORE :

PUBLISHED BY F. LUCAS, JUN. AND JOSEPH CUSHING.

J. Robinson, printer.

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