SUMMARY The author gives the main results of his study on the Quaternary of Basutoland (South Africa) and the stone implements discovered within. The study of the lithological faciès and topographical situation enables him to divide the Quaternary formations into several principal cycles which are in very narrow relation to climatic modification, cyclic themselves. A typical cycle is divided thus : 1) A period of sinking down of river beds : dry, cold climate, with summer stormy rains. 2) Lengthy stabilisation of the base level, formation of a broad alluvial plain of pebbles and gravel (it will eventually become a terrace) — cold and damp climate in winter (pluvio-glaciation). 3) Blanketting by non-stratified silts of eolian origin; filling up of the thalwegs (with marshes) = dry climate in winter, wet and mild in Summer. 4) Slight to moderate denudation (sheet erosion), with loosening and surface eolisation of stones = accentuation of the preceding climate, dry and cold "winter, very dry and hot summer with scarce and late rainfalls. The study of the Quaternary all over Basutoland, but mainly about Maphutseng (Mohale's Hoek district), has enabled the author to discover numerous stone cultures (a), in the alluvial terraces, (b) in the eolian silts (which can be observed, even as weathered remnants, in the three last main cycles), and (c) mixed up in residual gravel beds left on the eroded country rock or previous Quaternary deposits, after the washing out during erosion periods. A remarquably complete scale is thus obtained, that stretches from the Pre-Stellenbosch (Oldowan) crude implements in terrace IV, to the tools cut by Bushmen up to the last century. The last cycle alone is quite complex : three phases of successive filling up by silts alternating with erosion, with numerous cultures (the author also draws attention to a rich deposit of Insects in terrace number I, about the end of the last pluvio-glaciation).SUMMARY The author gives the main results of his study on the Quaternary of Basutoland (South Africa) and the stone implements discovered within. The study of the lithological faciès and topographical situation enables him to divide the Quaternary formations into several principal cycles which are in very narrow relation to climatic modification, cyclic themselves. A typical cycle is divided thus : 1) A period of sinking down of river beds : dry, cold climate, with summer stormy rains. 2) Lengthy stabilisation of the base level, formation of a broad alluvial plain of pebbles and gravel (it will eventually become a terrace) — cold and damp climate in winter (pluvio-glaciation). 3) Blanketting by non-stratified silts of eolian origin; filling up of the thalwegs (with marshes) = dry climate in winter, wet and mild in Summer. 4) Slight to moderate denudation (sheet erosion), with loosening and surface eolisation of stones = accentuation of the preceding climate, dry and cold "winter, very dry and hot summer with scarce and late rainfalls. The study of the Quaternary all over Basutoland, but mainly about Maphutseng (Mohale's Hoek district), has enabled the author to discover numerous stone cultures (a), in the alluvial terraces, (b) in the eolian silts (which can be observed, even as weathered remnants, in the three last main cycles), and (c) mixed up in residual gravel beds left on the eroded country rock or previous Quaternary deposits, after the washing out during erosion periods. A remarquably complete scale is thus obtained, that stretches from the Pre-Stellenbosch (Oldowan) crude implements in terrace IV, to the tools cut by Bushmen up to the last century. The last cycle alone is quite complex : three phases of successive filling up by silts alternating with erosion, with numerous cultures (the author also draws attention to a rich deposit of Insects in terrace number I, about the end of the last pluvio-glaciation).Ellenberger P. Le Quaternaire au Basutoland (Afrique du Sud) (Succession et stratigraphie des industries découvertes dans le bassin du Haut-Orange). In: Bulletin de la Société préhistorique de France, tome 57, n°7-8, 1960. Travaux en retard. pp. 439-475