ABSTRACT
A Large body of data concerning the geographical distribution of the iso-agglutination blood-groups, accumulated during the last fifteen years, is of special theoretical importance in connection with an analysis of the genetical significance of anthropological classifications. They involve the only type of ethnic differences concerning the genetic mechanism of which we possess definite information, based upon the application of rigorous quantitative treatment. So it is of the utmost significance to ask how far it is possible to establish any parallelism between the distribution of the iso-agglutination 161 reactions and single or grouped measurements of osteometric or other somatic characters which have been used by physical anthropologists as a basis for racial classification. The object of this survey is to set forth relevant information bearing upon the issue, and to discuss some theoretical implications emerging from its treatment.
