Front matter
Reading edition
THE 43,000,000 CANDLE-POWER BEAMS THROWN FROM THE HELIGOLAND LIGHTHOUSE.
Being projected from a height of 272 feet above the sea, the beacon has a range of 23 miles, and on a clear night the rays are seen from Büsun, 35 miles away.
Frontispiece.
CONQUESTS OF SCIENCE
LIGHTSHIPS AND LIGHTHOUSES
BY FREDERICK A. TALBOT AUTHOR OF
“MOVING PICTURES,” “RAILWAY CONQUEST OF THE WORLD,” “THE STEAMSHIP CONQUEST OF THE WORLD,” ETC.
ILLUSTRATED
PHILADELPHIA: J. B. LIPPINCOTT COMPANY LONDON: WILLIAM HEINEMANN 1913
Printed in England.