Note 254 — Chapter XXXVIII · THE BASALT-PLATEAU OF THE PARISH OF SMALL ISLES—RIVERS OF THE VOLCANIC PERIOD
Reading edition
Mineralogy of the Scottish Isles, vol. ii. p. 47. See also Macculloch, Western Isles, vol. i. p. 521, and Hay Cunningham, Mem. Wern. Soc. vol. viii. p. 155.