GIDDINGS, _The Principles of Sociology,_ 3d edition.
SMALL, _General Sociology._
SPENCER, _The Study of Sociology._
STUCKENBERG, _Sociology: The Science of Human Society._
WARD, _Pure Sociology._
_American Journal of Sociology_, many articles.
For a fairly extensive bibliography on sociology, consult Howard's
General Sociology: An Analytical Reference Syllabus.






CHAPTER II


THE BEARING OF THE THEORY OF EVOLUTION UPON SOCIAL PROBLEMS

Since Darwin wrote his _Origin of Species_ all the sciences in any
way connected with biology have been profoundly influenced by his theory
of evolution. It is important that the student of sociology, therefore,
should understand at the outset something of the bearing of Darwin's
theory upon social problems.

We may note at the beginning, however, that the word _evolution_
has two distinct, though related, meanings. First, it usually means
Darwin's doctrine of descent; secondly, it is used to designate
Spencer's theory of universal evolution. Let us note somewhat in detail