“The time will come when the Ocean will no longer limit the known lands, when a new world shall be opened up to the followers of the sea, and Thule will be no longer the Ultima Thule of the earth.”

Seneca, “Medea.”

New York

THE MACMILLAN COMPANY

1922

All rights reserved

Copyright, 1917,

By THE MACMILLAN COMPANY.

Set up and electrotyped. Published March, 1917.

Revised Edition October, 1922.