In the maps and memoirs of the Geological Survey of Scotland there is frequent mention of raised beaches at 50 and 100 feet above the present sea - level. Mr. James Geikie, too, in his well-known book on the Great Ice Age, confidently assumes the existence of beaches at these two levels. It is therefore with some degree of reluctance that in the following remarks I venture to question the reality of these supposed beaches; but it will lessen the field of controversy if I confine my observations to theeast side of Scotland. Matters may probably differ somewhat in regard to the west side.