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LENGTHS AND LEVELS
TO
Bradshaw's Maps
OF
CANALS, NAVIGABLE RIVERS, AND RAILWAYS.
FROM ACTUAL SURVEY.
TAKEN FROM A DATUM OF SIX FEET TEN INCHES UNDER THE SILL OF THE OLD DOCK GATES AT LIVERPOOL.
DEDICATED TO
THOMAS TELFORD, F.R.S. L. & E.
PRESIDENT OF THE INSTITUTION OF CIVIL ENGINEERS.
LONDON:
T. G. WHITE AND CO. PRINTERS,
Crane Court, Fleet Street.
1832.
