it is the science of social phenomena. This conception is not incorrect,
but is somewhat vague, as there are manifestly other sciences of social
phenomena, such as economics and political science. Such a conception of
sociology would make it include everything in human society. A third
faulty conception is that it is the science of human institutions. This
is faulty because it again is too narrow. An institution is a
_sanctioned_ form of human association, while sociology deals with
the ephemeral and unsanctioned forms, such as we see in the phenomena of
mobs, crazes, fads, fashions, and crimes, as well as with the sanctioned
forms. A fourth conception which might be criticized is that sociology
is the science of social organization. This makes sociology deal with
the laws or principles of the relations of individuals to one another,
and of institutions to one another. It is to be criticized as faulty
because it fails to emphasize the evolution of those relations. All
science is now evolutionary in spirit and in method and believes that
things cannot be understood except as they are understood in their
genesis and development. It would, therefore, perhaps be more correct to
define sociology as the science of the evolution of human interrelations
than to define it simply as the science of social organization.

The Problems of Sociology.--The problems of sociology fall into two
great classes; first, problems of the organization of society, and
second, problems of the evolution of society. The problems of the
organization of society are problems of the relations of individuals to
one another and to institutions. Such problems are, for example, the
influence of various elements in the physical environment upon the
social organization; or, again, the influence of various elements in
human nature upon the social order. These problems are, then, problems
of society in a hypothetically stationary condition or at rest. For this
reason Comte, the founder of modern sociology, called the division of