It has been admitted that there is nothing of culture outside the contents and processes of “individual minds.” It may, therefore, be argued that “individual” psychology, or at any rate a special application or department thereof, can give an adequate account of culture. In the first place the development of culture is a matter of centuries; its progressions are infinitesimal and cannot be traced in the life-history of the individual. A history of culture has, therefore, facts of its own to deal with—if only as a descriptive science folk psychology (or ethnology) is amply justified.