THE NEW YORK PUBLIC LIBRARY

ASTOA LEX

578

MATHEMATICAL AND GENERAL

NAVIGATION TABLES,

INCLUDING EVERY TABLE REQUIRED WITH THE NAUTICAL ALMANAC IN FINDING THE

LATITUDE AND LONGITUDE:

WITH AN EXPLANATION OF THEIR CONSTRUCTION, USE, AND APPLICATION ΤΟ

NAVIGATION AND NAUTICAL ASTRONOMY,

TRIGONOMETRY, DIALLING, GUNNERY, ETC. ETC.

BY THOMAS KERIGAN, R.N.

AUTHOR OF "THE YOUNG NAVIGATOR'S GUIDE," ETC.

SECOND EDITION;

CAREFULLY REVISED, AND ADAPTED TO THE IMPROVED ELEMENTS INTRODUCED INTO THE

NAUTICAL ALMANAC.

Dedicated, by permission, to the Right Hon. the Lords Commissioners of the Admiralty.

IN TWO VOLUMES.

VOLUME I.

LONDON:

PUBLISHED BY SIMPKIN, MARSHALL, & CO.,
STATIONERS' HALL-COURT, LUDGATE-HILL;

AND SOLD BY J. W. NORIE AND CO., LEADENHALL - STREET.

MDCCCXXXVIII.

18:5

:

PUBLIC LIBRARY

TO

THE RIGHT HONOURABLE GILBERT, EARL OF MINTO, G.C.B., &c., &c.,
VICE-ADMIRAL SIR CHARLES ADAM, K.C.B., M.P.,

REAR-ADMIRAL SIR WILLIAM PARKER, K.С.В.,

REAR-ADMIRAL THE HONOURABLE GEORGE ELLIOT, C.B.,

CAPTAIN SIR EDWARD THOMAS TROUBRIDGE, BART., M.P.,-and

THE RIGHT HONOURABLE LORD DALMENY, M.P.,

HER MAJESTY'S LORDS COMMISSIONERS FOR EXECUTING THE OFFICE OF LORD HIGH ADMIRAL OF THE UNITED KINGDOM OF GREAT BRITAIN AND IRELAND,

THIS TREATISE,

DESIGNED TO AFFORD TO THE NAVIGATOR A COMPREHENSIVE

AND PRACTICAL GUIDE

TO THE SCIENCES OF NAVIGATION AND NAUTICAL ASTRONOMY,

AND NOW ADAPTED TO THE IMPROVED ELEMENTS CONTAINED IN

THE NAUTICAL ALMANAC;

IS,

BY THEIR PERMISSION, MOST RESPECTFULLY AND GRATEFULLY

DEDICATED,

BY THEIR LORDSHIPS' MOST HUMBLE

AND MOST OBEDIENT SERVANT,

THE AUTHOR.