Mr Smith of Jordanhill stated the general results of his observations on the newest tertiary or pliocene deposites of Scotland. In every one of the maritime counties, elevated marine beds containing shells, of which about one-tenth are no longer to be found in the British seas, have been discovered. Some of the shells appear to have become altogether extinct, others occur in crag and Sicilian tertiary beds, and others in the Arctic seas,—indicating that the climate was probably colder at the period of their deposition.