Chapter 22

The Great Conglomerate--Its Undulatory and Rectilinear Members--Knock Farril and its Vitrified Fort--The old Highlanders an observant race--The Vein of Silver--Summit of Knock Farril--Mode of accounting for the Luxuriance of Herbage in the ancient Scottish Fortalices--The green Graves of Culloden--Theories respecting the Vitrification of the Hill-forts--Combined Theories of Williams and Mackenzie probably give the correct account--The Author's Explanation--Transformations of Fused Rocks--Strathpetlier--The Spa--Permanent Odoriferous Qualities of an ancient Sea-bottom converted into Rock--Mineral Springs of the Spa--Infusion of the powdered rock a substitute--Belemnite Water--The lively young Lady's Comments--A befogged Country seen from a hill-top--Ben-Wevis--Journey to Evanton--A Geologist's Night-mare--The Route Home--Ruins of Craig house--Incompatibility of Tea and Ghosts--End of the Tour. 393