NAUTICAL ASTRONOMY

LONDON

PRINTED BY SPOTTISWOODE AND CO.

NEW-STREET SQUARE

THE

PROJECTION AND CALCULATION

OF

THE SPHERE

FOR YOUNG SEA OFFICERS

BEING

A COMPLETE INITIATION INTO NAUTICAL ASTRONOMY

BY S. M. SAXBY, R.N.

PRINCIPAL INSTRUCTOR OF NAVAL ENGINEERS, HER MAJESTY'S STEAM RESERVE
LATE OF CAIUS COLLEGE, CAMBRIDGE