About a year ago I communicated to this Society a note on ‘The Pleistocene Deposits of the Sussex Coast,’ in which were given some of the more important results brought out by the new geological survey of that district. It was suggested, among other things, that the fossils of the ‘mud-deposit’ of Selsey indicated an interglacial mild period, represented also by some abundantly-fossiliferous strata at West Wittering. The continuation of the survey westward now enables me to state that the same deposit is found also in Hampshire, where it yields similar fossils, and distinctly underlies the mass of the implement-bearing gravels of that coast. The new locality for the ‘mud-deposit’ is the foreshore at Stone, three miles south of the village of Fawley, and the same distance from the entrance to Southampton Water; it is consequently about 20 miles west of the patches already known. The mass of tenaceous Scrobicularia-clay, now visible at Stone, may have been observed by other geologists, but I can find no record of it ; in all probability, if observed at all, it was passed by as being merely an exposure of recent estuarine mud belonging to the Dark Water, a stream which now flows into the Solent a quarter of a mile farther west. Opposite the spot where the clay is seen, a low cliff marks the seaward edge of the great gravel-plateau of the New Forest ; but this cliff is so low, that at first sight the gravel might be mistaken for