Key points are not available for this paper at this time.
The statistical technique of this paper is based upon the empirically established fact that over the course of time pottery types come into and go out of general use by a given group of people. It is further based upon the established fact that in cultures where chronology has been determined the differential use of types takes on a form illustrated in Figure 89. The data of this diagram are hypothetical, the purpose being merely to illustrate the present discussion.
W. Stitt Robinson (Sun,) studied this question.