^{page 57 note *} The heights are given in feet above sea-level.

^{page 58 note *} Q.J.G.S., vol. xvi, I860, p. 312.

^{page 58 note ‡} Q.J.G.S., vol. xix, 1863, p. 180.

^{page 58 note †} Q.J.G.S., vol. xvii, 1861, p. 534.

^{page 58 note §} Geol. Mag., vol. v, 1908, p. 396.

^{page 59 note *} “On the Occurrence of Silurian (?) Rocks in Forfarshire and Kincardineshire along the Eastern Border of the Highlands,” Q.J.G.S., vol. lvii, 1901, p. 334Google Scholar.

^{page 59 note †} Gregory, , “Problems of the South-Western Highlands,” Trans. Geol. Soc. Glasgow, vol. xiv, 1910, p. 15Google Scholar.

^{page 59 note ‡} “The Geology of South-Eastern Kincardineshire,” Trans. Roy. Soc. Edin., vol. xlviii, 1913, p. 927Google Scholar.

^{page 59 note §} “The Highland Border Rocks of the Aberfoyle District,” Trans. Roy. Soc. Edin., vol. lii, 1917, p. 193Google Scholar.

^{page 60 note *} Q.J.G.S., vol. lvii, 1901, p. 334Google Scholar.

^{page 60 note †} Ann. Report Geol. Survey, 1895, p. 26; 1896, pp. 28 and 209.

^{page 61 note *} Essai Geologique sur l'Écosse, Paris, about 1820, p. 54Google Scholar.

^{page 61 note †} “On the Limestone of Clunie, in Perthshire, with remarks on Trap and Serpentine,” The Edinburgh Journal of Science, vol. i, 1824, p. 1Google Scholar.

^{page 61 note ‡} “On a Dike of Serpentine, cutting through Sandstone, in the County of Forfar,” The Edinburgh Journal of Science, vol. iii, 1825, p. 112Google Scholar.

^{page 61 note §} “On the Tertiary and older Peridotites of Scotland,” Q.J.G.S., vol. xli, 1885, p. 399Google Scholar.

^{page 61 note ∥} “The Lower Old Red Sandstone Rocks of the Balmaha-Aberfoyle Region,” Trans. Edin. Geol. Soc., vol. viii, 1905, p. 315Google Scholar.

^{page 61 note ¶} “The Geology of North Arran, South Bute, and the Cumbraes,” Mem. Geol. Survey of Scotland, 1903.

^{page 61 note **} “The Highland Border Rocks of the Aberfoyle District,” Trans. Roy. Soc. Edin., vol. lii, 1917, p. 195Google Scholar.

^{page 66 note *} Campbell, R., “The Geology of South-Eastern Kincardineshire,” Trans. Roy. Soc. Edin., vol. xlviii, 1913, p. 926Google Scholar; Jehu, T. J. and Campbell, R., “The Highland Border Rocks of the Aberfoyle District,” Trans. Roy. Soc. Edin., vol. lii, 1917, p. 180Google Scholar.

^{page 67 note *} See also A. Geikie, Ancient Volcanoes of Great Britain, 1897, pp. 277, 292, 311.

^{page 68 note *} British Petrography, 1888, p. 287.

^{page 70 note *} “Volcanic Rocks of the North-East of Fife,” Q.J.G.S., vol. xlii, p. 423Google Scholar.

^{page 70 note †} “The Geology of South-Eastern Kincardineshire,” Trans. Roy. Soc. Edin., vol. xlviii, 1913, p. 943Google Scholar.

^{page 76 note *} “The Geology of South-Eastern Kincardineshire,” Trans. Roy. Soc. Edin., vol. xlviii, 1913, p. 931Google Scholar.

^{page 77 note *} “The Geology of South-Eastern Kincardineshire,” Trans. Roy. Soc. Edin., vol. xlviii, 1913, pp. 950–951Google Scholar.

^{page 77 note †} Trans. Roy. Soc. Edin., vol. xlviii, 1913, p. 923Google Scholar.

^{page 78 note *} Trans. Roy. Soc. Edin., vol. xlviii, 1913, p. 949Google Scholar.

^{page 78 note †} Loc. cit.., p. 9.

^{page 81 note *} Loc. cit., vol. i, 1824, p. 1, “On the Limestone of Clunie, in Perthshire, with remarks on Trap and Serpentine.”

^{page 82 note *} Trans. Roy. Soc. Edin., vol. lii, 1917, pp. 206–208Google Scholar.

^{page 84 note *} Trans. Edin. Geol. Soc., vol. viii, 1905, p. 315Google Scholar.

^{page 86 note *} Mem. Geol. Survey of Scotland, “Tertiary and Post-Tertiary Geology of Mull, Loch Aline, and Oban,” 1924, p. 370.