WORKS OF

GEORGE L. HOSMER

PUBLISHED BY

JOHN WILEY & SONS

TEXT-BOOK ON PRACTICAL ASTRONOMY First Edition, 8vo, 210 pages, 78 cuts, cloth, $2.00 net.

AZIMUTH

First Edition, 12mo, 78 pages, 6 cuts, leather, $1.00.

By Charles B. Breed and George L. Hosmer

THE PRINCIPLES AND PRACTICE OF SUR

VEYING

Vol. I, Elementary Surveying, Third Edition, 8vo, 571 pages, 200 cuts, cloth, $3.00.

Vol. II, Higher Surveying, First Edition, 8vo, 449 pages, 162 cuts, cloth, $2.50.

403r

ON

PRACTICAL ASTRONOMY

BY

GEORGE L. HOSMER

Assistant Professor of Civil Engineering, Massachusetts
Institute of Technology

FIRST EDITION

FIRST THOUSAND

NEW YORK

JOHN WILEY & SONS

LONDON: CHAPMAN & HALL, LIMITED