THE INDUSTRIAL HISTORY

OF THE

UNITED STATES

•The

PHYSIOGRAPHIC MAP OF THE UNITED STATES

OF THE

United States

BY

KATHARINE COMAN, PH.B.

PROFESSOR OF ECONOMICS AND SOCIOLOGY IN
WELLESLEY COLLEGE

New York

THE MACMILLAN COMPANY

LONDON: MACMILLAN & CO., LTD.

1907

All rights reserved