In a former communication to the Society2 I discussed the evidence for the continuity of evolution from the standpoint of vertebrate paleontology. The theory adopted to interpret the evidence was that of evolution of each race in a center of dispersal, and spread from there in successive waves of migration to other regions. The present contribution aims to discuss certain phases of this theory in their effect on the structure and affinities of a phyletic series in a region remote from the center of dispersal.
The considerations to be presented and their effects on the composition and affinities of a race are familiar to modern ethnologists. They are recognized facts of the dispersal of the human races, and their effect on the affinities of each race is clearly seen and universally recognized. Their application to zoological, and especially to paleontological, studies is, I believe, no . . .