202 SOCIAL EVOLUTION 



GIDDINGS, F. H. Descriptive and Historical Sociology. 



GIDDINGS, F. H. Democracy and Empire. 



GUMPLOWICZ, L. The Outlines of Sociology. 



LE BON, G.The Crowd. 



McDouGALL, "W. An Introduction to Social Psychology. 



Ross, E. A. Social Control. 



SUMNER, W. G. Folkways. 



TARDE, G. The Laws of Imitation. 



