ABSTRACT
One interesting point about the pre-Crag flints is that many of them bear striae which are interpreted by some authorities as evidence of a Pliocene glaciation, the ice passing over the land-surface occupied by pre-Crag man. The discoveries of flints claimed to be manmade tools below the Norwich Crag and the Red Crag of Suffolk belong to pre-war archaeology. Evidence that the detritus bed contains implements of different periods is afforded by the discovery therein, of dark-stained eoliths of Kentish type. The gravel in which the implements occur is presumably older than the formation of the Gipping Valley, which in itself suggests that they are very old, the worked pebbles of Darmsden type must obviously be included in pre-palaeolithic industries. Those who are able to find some virtue in eoliths will examine with sympathetic interest another very primitive type of flint implement, also of great antiquity that is characteristic of what is known as the Darmsden pebble-industry.
