Note 85 — Chapter X · THE CAMBRIAN VOLCANOES OF SOUTH WALES

For Dr. Hicks' views, see especially his papers in the Quart. Journ. Geol. Soc. vols. xxxi. xxxiii. xxxiv. xl. My criticism of them will be found in op. cit. vol. xxxix. (1883), subsequently in the main confirmed by Prof. Lloyd Morgan, op. cit. xlvi. p. 241. See also Prof. Blake, op. cit. xl. (1884). Dr. Hicks in his more recent papers has merely reiterated his previously published opinions.