A Correspondence in Man a few years ago led to the expression of various attitudes towards the nomenclature of Lower Palaeolithic finds. It was agreed that cultural names should not be used to describe distinct techniques, but it was recognised that difficulties of terminology might arise, since techniques may indicate cultural similarities and therefore perhaps connections. When the time factor enters into the problem then other authorities differ. Professor Childe says, ‘where there is the slightest danger of confusing the chronological with the cultural classification, such usage is to be deprecated.’ Yet Professor Garrod later states, ‘the time has come when the labels Lower, Middle and Upper Palaeolithic should be used exclusively in a chronological sense,’ and she refers them to subdivisions of the geological chronology. Nevertheless, as Professor Garrod herself remarks, ‘nine prehistorians out of ten continue to use these terms as more or less synonymous with hand-axe, flake and blade industries respectively,’ so these names have a purely technical or cultural significance. It follows from Professor Childe's sage advice that their chronological application ought to be allowed to fall into disuse. There is a perfectly good chronology supplied by the geologist already, with a world-wide system of five glaciations (Geikie), or their equivalents. Moreover, since it is becoming more and more apparent that the division into hand-axe, flake and blade industries is unsatisfactory (there are blades, according to Burkitt's definition of a blade, in Lower Palaeolithic industries), the threefold division has lost its meaning. I therefore suggest that we label as Lower Palaeolithic all those industries of the Pleistocene not comprised within the purely cultural group association of those predominantly blade industries which are found towards the end of the Upper Pleistocene, and are known as the Upper Palaeolithic. It is the purpose of this paper to clarify the relationship between technique and culture in the Lower Palaeolithic industries, to define more satisfactorily the terms, culture, industry and technique as used by the prehistorian, and to define some, at least, of the major cultural assemblages in North-western Europe.