In his chapter on the forms of implements from the River Drift, Sir J. Evans mentions certain specimens which, are “flat on one face and convex on the other,” and among these he recognises one type with a thick butt (“shoe-shaped”) and another thinner one, for which he proposes the term “flat-faced.” As however, the thick specimens are by no means always typically shoe-shaped, and the one characteristic which binds the two groups together is the comparative flatness of one face, there seems to be no sufficient reason for limiting the term “flat-faced,” and in the following pages it is applied to the whole series, whether thick or thin.