1 I am greatly indebted to the present owner of the Greenough Papers for giving me the opportunity to study them.
2 He never studied under Werner or even visited Freiburg, contrary to the statement in the Geological Society's obituary of him (Proc. Geol. Soc., 1856, xii, p. xxvii).
3 Trans. Geol. Soc., 1817, 1st series, iv, 314–392.
4 Many years later, Charles Lyell wrote to Greenough, (28 11 1834): ‘I know by experience that you only allow your original observations to steal into the world some 10 or 20 years after they are made thro' other authors' works.’ On another occasion, Lyell noted MacCulloch's ‘disposition to neglect or speak slightingly of the labours of others’ (Proc. Geol. Soc., 1836, ii, 359).
5 ‘Observations on the Parallel Roads of Glen Roy’, Phil. Trans. Roy. Soc., 1839, 39–81.
6 ‘The Glacial Theory and its Recent Progress’, Edin. New. Philos. J., 1842, xxxiii, 217–282.
7 Cf. John, Playfair, Illustrations of the Hultonian Theory, Edinburgh, 1802, §293.
8 Cf. John, Whitehurst, An Inquiry into the Original State and Formation of the Earth …, 2nd ed., London, 1786: chapter XVI, ‘Of the Strata in Derbyshire and other Parts of England’.
9 Sills and lava-flows of olivine dolerite.
10 Werner's claim to have found such a transition was a cornerstone of Neptunist theory. His interpretation of the Schiebenberg was reprinted by Jameson, in A mineralogical Description of the County of Dumfries, Edinburgh, 1805, pp. 180–185.
11 Cf. Playfair, op. cit., §190. Horizontal Upper Old Red Sandstone rests on vertical Silurian slates and greywackes.
12 Probably a slip of the pen: Hall's views are, of course, Plutonist.
13 His ‘Account of a Series of Experiments, shewing the Effects of Compression in modifying the Action of Heat’ had been read a month previously (3 June 1805), but was not published in full until 1812 (Trans. Roy. Soc. Edin., vi, 71–185).
14 Cf. Playfair, op. cit., §63.
15 Cf. Playfair, op. cit., §§67, 243, 255, 259, 262.
16 Hope, Thomas (1766–1844), Professor of Chemistry at Edinburgh, 1795–1843.
17 Cf. Playfair, op. cit., §§184–185.
18 Cf. Playfair, op. cit., §65.
19 Part of the Tertiary Ardnamurchan igneous complex.
20 Part of the Tertiary Hebridean dyke-swarm.
21 Lower Liassic Pabba Shales.
22 Cf. Playfair, op. cit., §69.
23 Cf. Jameson, R., 1800, Scottish Isles, ii, 52–53.
24 Hailstone, John (1759–1847), Woodwardian Professor of Geology at Cambridge, 1788–1818.
25 Cf. Jameson, , op. cit., ii, 44–6.
26 Cf. Jameson, , op. cit., i, 213–220.
27 A small appended sketch shows one dyke tapering out as another expands en echelon.
28 Playfair, op. cit., §20.
29 Middle Old Red Sandstone.
30 Cf. Playfair, op. cit., §§82, 277; Jameson, , op. cit., ii, 164–169.
31 Cf. Playfair, op. cit., §§68, 266; Jameson, op. cit., i, 75.