Note 351 — Chapter XIX · VOLCANOES OF THE LOWER OLD RED SANDSTONE OF "LAKE CALEDONIA"
Reading edition
The south-western part of this area from Arbroath to Johnshaven was mapped for the Geological Survey by the late Mr. H. M. Skae, the north-eastern part by Mr. D. R. Irvine. My account of it is mainly taken from notes made by myself on the ground preliminary to the commencement of the mapping of the Survey.