The mollusc fauna is quite different here from that of the Keys. There are species in common, but as we look about the faunas are seen to be quite different in the two regions. This cannot be wholly due to the sand tree in the north and coral in the keys but must be due more to temperature. Then too are the trees and the collections of sea anemones about. The sea and the land is here again clearly separable. The heaters come from the land a quarter or 2 miles out and finally die out on the upper beach. The dunes where cut by the storms show the stratification which is very unlike the cross bedding seen in so many sandstones. The lines are long and sparse, and while there is some cross bedding for about 1/4 distance it is more dominant as it is in a marine bedded sandstone. Some layers are of black sand and this helps are the ones to distinguish the bedding. Much corroded material and leaves seems to be buried in these sands.