Whinstone, neither of volcanic nor aqueous formation, § 235. Zeolite and carbonate of lime included in whinstone, but not in lava, _ib._ Not introduced by infiltration, § 236. Disposition of whinstone mountains differs from that of streams of lava, § 237. This argument first employed by Mr Strange, § 238. His general views of this subject, § 239. Explanation of the regular structure of whinstone hills, according to Dr Hutton's theory, § 240. Many hills supposed to be extinguished volcanoes, are rocks of real whinstone that has flowed deep under the surface. Vein of whinstone mistaken for a stream of lava by Faujas, § 241, 242. Submarine volcanoes of Dolomieu, § 243. Objections to this theory, § 244, 245. Dolomieu in another place contends for the aqueous formation of basaltes, § 246. His arguments answered; also those of Bergman, § 248, 249. Argument of WERNER for the aqueous origin of basaltes, § 250. Remarks on the supposed gradual transition of basaltes to argillaceous schistus, § 251, 252. Of the shells said to be found in basaltes, § 253. Instances from Portrush in Ireland, and from Cerigo on the Coast of Greece, _ib._ and 254,--from the Veronese, § 255. Objections to the Neptunian formation of whinstone, founded on the difference between it and the contiguous stratified rocks, § 256. On the resemblance of the strata below and above certain masses of whinstone, § 257. On the irregularity of the thickness of those masses, § 258. Wedge form masses of whinstone included between strata, § 259. Consequences of this wedge form, § 260. Sandstone fragments included in whin, § 261, 262. Bending of the strata contiguous to whinstone, § 264. Induration, § 265, 266. Charring of coal by whin, § 267. Of the manner in which the bitumen may have been driven off by heat, § 268. Two kinds of fossil coke, § 269. Graduation into plumbago, _ib._ and 270. Only remaining objection obviated by Sir James Hall's experiments, § 271. NOTE XV.--On Granite. p. 307 Granite veins of two kinds, § 274. Veins Of which the communication with large masses of the same stone is not visible: At the Isle of Coll in the Hebrides, § 275,--at Portsoy, § 276,--in Cornwall, § 277,--in Glentilt, § 278. Veins visibly connected with larger masses. Argument furnished by them in favour of this theory, § 279, 280. Impossibility of their being formed by infiltration, § 281. Veins of this kind in Arran, § 282,--Galloway, § 283,--sides of Loch Chloney, Invernessshire, §284,--St Michael's Mount, Cornwall § 285. Fragments of schistus contained in granite, § 287. 2. Granite of Portsoy. p. 320