Statue of George Washington, U. S. Sub-Treasury, New York.

THE UNITED STATES

OF AMERICA

A STUDY OF THE AMERICAN COMMONWEALTH,
ITS NATURAL RESOURCES, PEOPLE,

INDUSTRIES, MANUFACTURES, COMMERCE,

AND ITS WORK IN LITERATURE, SCIENCE, EDUCATION,
AND SELF-GOVERNMENT

EDITED BY

NATHANIEL SOUTHGATE SHALER, S. D.

PROFESSOR OF GEOLOGY IN HARVARD UNIVERSITY

DEAN OF LAWRENCE SCIENTIFIC SCHOOL