I.—The Glaciation of East Lothian South of the Garleton Hills

Abstract

The glaciation of East Lothian has already been dealt with separately by Professor John Young, who, when attached to the Geological Survey, treated this subject in the memoir of the district published in 1866. His account of the phenomena, striæ, boulder clay, dry valleys, etc., is concise and clear, but he does not enter deeply into a discussion of causes. A guarded reference to submersion to account for the presence of an erratic boulder of carboniferous sandstone at a height of 1500 feet above sea-level shows in fact that he had not arrived at a full conception of the possibilities involved in glaciation by land ice. He was, however, quite definite in ascribing many important erosion effects in the district to the work of an “ice-stream.” In this as in most other points he had been forstalled by Sir Archibald Geikie, who had already described the immediately adjoining area to the south.