210. View of small neck in Calciferous Sandstones, on the shore, three miles east from St. Andrews 72 211. Ground-plan of Permian volcanic vents 73 212. Small neck in Calciferous Sandstones a little east from the "Rock and Spindle," two and a half miles east from St. Andrews 74 213. Plan of volcanic necks at Kellie Law, East of Fife, on the scale of three inches to one mile 75 214. Plan of the craters in Volcanello, Lipari Islands 75 215. Section of the strata at the edge of the volcanic vent on the east side of Elie Harbour 76 216. Agglomerate of neck on shore at Ardross, two miles east from Elie 77 217. Ground-plan of volcanic neck, Elie Harbour, showing circular disposition of the stratification 80 218. Section across the great vent of Kincraig, Elie, on a true scale, vertical and horizontal, of six inches to a mile 81 219. Dyke in volcanic neck, on the beach, St. Monans 82 220. Section of part of crater rim, Island of Volcano 83 221. Dyke rising through the agglomerate of a volcanic vent; Kincraig, Elie 84 222. Radiating columnar dyke in the tuff of a volcanic vent. Rock and Spindle, two and a half miles east from St. Andrews 86 223. View of part of the shore front of the great vent at Kincraig, looking westward, with the columnar basalt in front 88 224. Plan of volcanic neck on beach near St. Monans 89 225. Columnar basalt in the neck of Kincraig, Elie, seen from the west 90 226. Section across Largo Law 91 227. Vein of "white-trap" cutting black carbonaceous shales, a little west from St. Monans Church 92 228. Section at Belvedere, S. W. of Exeter 97 229. Diagram to show the unconformability and overlap of the Permian rocks in the Crediton Valley 97 230. Section of the volcanic series at Kellerton, Devonshire 98 231. Section of agglomerate overlain with sandstone and andesite, Posbury, Crediton 99 232. Diagrammatic section across Titterstone Clee Hill 102 233. Dyke on the south-east coast of the Island of Mull 119 234. Fissure left by the weathering out of a dyke 120