Note 104 — J. E. MARR, M.A., F.R.S. (continued 4)
Reading edition
Prof. Judd's views will be found in a series of papers by him on the "Secondary Rocks of Scotland," Quart. Journ. Geol. Soc., vol. XXIX. p. 95, XXX. p. 220, XXXIV. p. 660, while Sir A. Geikie's explanation is advanced in a paper in the Transactions of the Royal Society of Edinburgh, vol. XXXV.; see also the same author's Ancient Volcanoes of Great Britain.