Note 370 — Chapter XX · VOLCANOES OF THE LOWER OLD RED SANDSTONE OF "LAKE CALEDONIA"—continued

The mapping of the Old Red Sandstone volcanic areas of Ayrshire for the Geological Survey was thus distributed:—The district east of Dalmellington was surveyed by Mr. B. N. Peach, that between Dalmellington and Straiton by Prof. James Geikie, and all from the line of the Girvan Valley south of Straiton westward to the sea by myself. The ground is embraced in Sheets 8, 13 and 14 of the Map of Scotland, and is described in accompanying Explanations.