upon the merits of this infant (sociology) which men have had the art to baptize before its birth, let us succeed, if possible, in bringing it forth." Tarde, La Logique Sociale, p. v.
Sociology has developed in response to the demands indicated above, and has taken on forms in general correspondence with them. These different types may be described as follows:
a) The "inclusive or coordinating" theory. This is a philosophical conception clearly introduced by Comte adopted in the main by Spencer, recognized as important by Ward, and accepted by DeGreef. Small regards Sociology as in one aspect a "synthesis of the special social sciences" and Giddings, although technically limiting the scope of the science, says that "in the broadest sense, sociology comprehends all social sciences, including statistics and history."
b) The "fundamental" theory, or the study of association as such. In the view of those who advocate this theory, there are certain phenomena of association, e. g., authority and subordination, competition, imitation, etc., which are not dealt with specifically by other social sciences although assumed by them as data. Giddings represents this theory in the United States and Simmel of Berlin seems to hold somewhat the same position.
c) The "constructive" theory, or the projection of social tendencies into ideals for guidance. Small stands for this as one of the functions of sociology, and Ward in his early work distinctly advanced this view. Judged by his recent articles the latter has apparently modified his position.
d) The "art of social control" theory. Ward in his Dynamic Sociology describes legislation as analogous to invention and advocates the study of social forces in order to apply them. Professor Bernard Moses would limit sociology to this service only, declaring that all other territory is already occupied by regularly constituted sciences.
3. A hierarchical arrangement of the problems or tasks which confront the student of society will aid in estimating the relative
