Petroleum, &c. from the distillation of coal, § 173. Gradation from petroleum to coal often met with, § 174. Connection of amber and coal, § 175. Why mines of blind coal have not always petroleum mines near them, § 176.
Note x.—The Height above the Level of the Sea, at which Marks of Aqueous Deposition are now found.
These marks consist either in stratification or in marine objects, § 177. The marks of stratification observed, 14739 feet above the sea, § 178. Shells in Peru, 14190, § 179. Kirwan's mistake concerning these shells, § 180. His error similar to Voltaire's, § 181.
Note xi.—Fracture and Dislocation of the Strata.
Slips, § 182. Rib of limestone in a slip near Huddersfield, § 183, 184. Singular fracture of pudding-stones at Oban in Argyleshire, § 185. Similar phenomena observed by Saussure between Nice and Genoa, ib. Remarks on it, § 186.
Note xii.—Elevation and Inflection of the Strata.
Junction of primary and secondary strata, § 187. Breccia incumbent on the primary, § 188. Junction of the primary and secondary strata: At Torbay in Devonshire, § 190,—coast of Berwickshire, § 191,—Cullen in Banffshire, § 193,—Ardencaple in Dunbartonshire, Arran, &c. § 194,—Pembrokeshire, § 195,—Jedburgh, § 196,—Ingleborough in Yorkshire, § 197,—Cumberland, § 198. Inflection of the strata, § 199. Remarkable instances in the Alps and Pyrenees, § 200, 201,—on Ben-Lawers in Perthshire, § 202,—coast of Berwickshire, ib.—Plymouth, § 203. Strata suffering such inflections have been soft and ductile, § 204. General property of these inflections, § 205, 206. uniform stretch of the primary strata, § 207. Inferences as to the nature of the elevating force, § 208. Imperfection of other theories. Crystallisation, ib. Marks of undulæ in the schistus, § 209. Elevation of the strata a stronghold of the Huttonian theory, § 210. Elevation of the strata enables us to see far into the interior of the earth, § 211.