The Raised Beaches on the marine plain between Portsmouth and Brighton are well-known. With the lowest beach at Brighton we are not here concerned. The chief exposures of the so-called 100 ft. beach lie between Chichester and Arundel. In this area the rock platform of the marine plain consists of Chalk and Eocene, and these together with the overlying beach deposits are generally covered by Coombe Rock. The true beach consists of a shingle of varying degrees of coarseness, and though generally associated with a deposit of fine soft sand known locally as “lug sand,” the term “beach” will be used in this paper of the former deposit only.

The implements here described have been obtained from four different beach exposures. Those at Pear Tree Knapp, East Hampnett, and in Aldingbourne Park clearly form part of a single beach, the surface of which ranges from 80 to 90 ft. above O.D. The fourth exposure in Slindon Park, where the beach reaches 135 ft. will be described separately (see Fig. 1). From this pit in 1912, Dr. Eliot Curwen obtained an Acheulean hand-axe, whilst Mr. Fowler has more recently described ten artefacts from the same site, though non e was found in situ.