Note 363 — Chapter XX · VOLCANOES OF THE LOWER OLD RED SANDSTONE OF "LAKE CALEDONIA"—continued

A Sketch of the Geology of Fife and the Lothians, 1839. The detailed descriptions in this work are accompanied with a map and two plates of sections. In the map all the volcanic rocks are represented by one colour. In the sections the bedding of the rocks is shown, and an indication is given of the succession of their chief varieties.

[364] See specially Mem. Wernerian Soc. vol. ii.; also MacKnight in vol. i. The account of the Pentland Hills by Hay Cunningham in vol. vii. (1838) is clear but brief.