Please see the [Transcriber’s Notes] at the end of this text.
THE
CIRCLE OF KNOWLEDGE
ESSENTIAL FACTS OF EVERYDAY INTEREST IN NATURE, GEOGRAPHY, HISTORY, TRAVEL, GOVERNMENT, SCIENCE, INVENTION, EDUCATION, LANGUAGE, LITERATURE, FINE ARTS, PHILOSOPHY, RELIGION, INDUSTRY, BIOGRAPHY, HUMAN CULTURE, AND UNIVERSAL PROGRESS
Easy to Read; Easy to Understand; Easy to Retain
EDITOR-IN-CHIEF
HENRY W. RUOFF, M.A., Litt.D., D.C.L.
Editor of “The Century Book of Facts,” “The Capitals of the World,”
“Leaders of Men,” “The Standard Dictionary of Facts,”
“Masters of Achievement,” “The Volume Library,”
“The Human Interest Library,” Etc.
NUMEROUS TEXT ILLUSTRATIONS, MAPS
TABLES, DUOTONE AND COLOR PLATES
Exclusive Publishers for Canada and
Newfoundland:
THE JOHN A. HERTEL CO., Ltd.
TORONTO, ONTARIO
THE STANDARD PUBLICATION COMPANY
BOSTON · WASHINGTON · CHICAGO
1917