Abstract
Quantitative methods for describing infraspecific differentiation are introduced and applied to three questions about the nature of human differentiation. The first question is whether or not human local populations are differentiated consistently by different attributes; the second is whether or not human local populations are differentiated into geographical races; the third is whether or not human local populations show clinal differentiation. The anthropometric data used were published by Mahalanobis, Majumdar & Rao (1949), and Hiernaux (1956).