Lightships and Lighthouses

LIGHTSHIPS AND LIGHTHOUSES

By permission of Messrs. Siemens Bros. & Co., Ltd.

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.


                                                                                                                                                                                                                                                                                                           

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