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ON THE

PRINCIPLES AND PRACTICE

OF)

LEVELLING,

SHOWING ITS APPLICATION TO PURPOSES OF

RAILWAY ENGINEERING AND THE CONSTRUCTION OF ROADS, &c.

BY

FREDERICK W. SIMMS, F. G. S., M. INST. C. E.,

CIVIL ENGINEER.

FIFTH EDITION, REVISED AND CORRECTED.)

WITH THE ADDITION OF

MR. LAW'S

PRACTICAL EXAMPLES FOR SETTING OUT RAILWAY CURVES.

With three Lithograph Plates and zebera! Wood-Cuts.)

NEW YORK:

D. VAN NOSTRAND, PUBLISHER,
23 MURRAY STREET AND 27 WARREN STREET.

1870.

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