The Third Interdigital Patterns on the Palms of the General British Population, Mongoloid and Non-Mongoloid Mental Defectives

Abstract

In the study of palm prints, a human palm is generally divided into five areas: hypothenar, thenar-first-interdigital, second, third and fourth inter-digitals, in each of which various configurations can be observed. These configurations range in form from whorls, loops and vestiges to absence of patterns, i.e. plain structures, called open fields. Whorls are patterns each with two triradii, and loops each with only one triradius. Vestiges, which are local disarrangements of epidermal ridges, vary from resembling a true pattern to approaching an open field.