Page:Transactions of the Geological Society, 1st series, vol. 4.djvu/229



The under part of this thin bed of sandstone is stalactitical, forming friable concretions of sand, dependent chiefly from the stems of decayed alcyonia. Were it not for these alcyonia, and for the limestone rubble which is found upon the surface, any one would suppose this bed to be of very recent production, formed of sand and ochre concreted by the action of the sea.