tutions which are striving to organize effective departments of
physical education would have found his experiences as graphically
depicted in these photographs and summed up in these charts extremely
helpful. Unfortunately it has proved impossible to print them here on
account of limitations of space, but all who are interested in
securing further information can obtain these valuable guides in the
introductory stages of the inauguration of a Department of Hygiene by
applying to the College of the City of New York. EDITOR.]

Footnotes:

[12] The construction of this chapter on the teaching of physical
training is based very largely upon the experiences and organization
of the Department of Hygiene in the College of the City of New York.

[13] This precollegiate instruction is, unfortunately, uniformly poor
in so far as it relates to health.

[14] The present enrollment in these classes, February, 1919, is
approximately 1500.

PART THREE

THE SOCIAL SCIENCES

CHAPTER

X THE TEACHING OF ECONOMICS
_Frank A. Fetter_

XI THE TEACHING OF SOCIOLOGY
_A. J. Todd_

XII THE TEACHING OF HISTORY
A. AMERICAN HISTORY
_H. W. Elson_

B. MODERN EUROPEAN HISTORY
_Edward Krehbiel_

XIII THE TEACHING OF POLITICAL SCIENCE
_Charles Grove Haines_

XIV THE TEACHING OF PHILOSOPHY
_Frank Thilly_

XV THE TEACHING OF ETHICS
_Henry Neumann_

XVI THE TEACHING OF PSYCHOLOGY
_Robert S. Woodworth_

XVII THE TEACHING OF EDUCATION
A. TEACHING THE HISTORY OF EDUCATION
_Herman H. Horne_

B. TEACHING EDUCATIONAL THEORY
_Frederick E. Bolton_

X

THE TEACHING OF ECONOMICS

=Conception and aims of economics=

Even though economics be so defined as to exclude a large part of the
field of the social sciences, its scope is still very broad. Economics
is less homogeneous in its content, is far less clearly defined, than
is any one of the natural sciences. A very general definition of
economics is: The study of men engaged in making a living. More fully
expressed, economics is a study of men exercising their own powers and
making use of their environment for the purposes of existence, of
welfare, and of enjoyment. Within such a broad definition of economics
is found room for various narrower conceptions. To mention only the
more important of