The Ancient Volcanoes of Great Britain, Volume 1 (of 2)
CHAPTER XIX
Volcanoes of the Lower Old Red Sandstone of "Lake Caledonia"
Description of the several Volcanic Districts: "Lake Caledonia," its Chains of Volcanoes--The Northern Chain: Montrose Group--Ochil and Sidlaw Hills--the Arran and Cantyre Centre--the Ulster Centre 294