^{page 400 note 1} Wherever Dr. Wright has mentioned the zone of Harp, serpentinum, it must prohably be taken to indicate the zone of Am. falcifer.

^{page 401 note 1} The History of the Mineral Waters of Derbyshire, Lincolnshire, and Yorkshire, by Short, Thomas, M.D., 4to., London, 1734, p. 96.Google Scholar

^{page 401 note 2} A View of the Present State of Derbyshire, 1789, vol. i. p. 195.Google Scholar

^{page 401 note 3} An Inquiry into the Original State and Formation of the Earth, by Whitehurst, John, 3rd edition, 1792, London, p. 218, et seq., plate i.Google Scholar

^{page 402 note 1} Slappits, fragments of the minerals burst out of the vein.

^{page 402 note 2} Stemples, joists laid across fissures, when the minerals are cut out, by way of making a floor, on which rubbish is deposited, to save the expense of raising it to the surface.

^{page 402 note 3} Forefield, that part of the vein under workmanship.

^{page 403 note 1} Kebble, a white opaque spar, calcareous, but not apt to break into rhomboidal forms.

^{page 403 note 2} The Mineralogy of Derbyshire, by Mawe, John, 8vo. London, 1802, p. 48.Google Scholar

^{page 403 note 3} General View of the Agriculture and Minerals of Derbyshire, by Farey, John, 8vo. London, 1811, vol. i. p. 250.Google Scholar

^{page 403 note 4} lb. p. 367.

^{page 404 note 1} An Account of the Explosion of Slickensides, by Watson, W., Edin. Journ. Sci. new ser. vol. ii. p. 186, 1829.Google Scholar

^{page 404 note 2} The History and Antiquities of Eyam; with a minute account of the Great Plague, which desolated that village in the year 1666, by Wood, William, 8vo., London and Derby, 2nd ed. 1852Google Scholar; 3rd ed. date not stated.

^{page 404 note 3} The Gem of the Peak; or, Matlock Bath and its Ticinity, etc., by Adam, W., London, 1845, p. 419, footnote.Google Scholar

^{page 404 note 4} Mining Almanack for 1850, by English, W., London, p. 220.Google Scholar

^{page 405 note 1} In a letter dated 22nd October, 1886.

^{page 405 note 2} In a letter dated 23rd November, 1886.

^{page 405 note 3} In a letter dated 15th October, 1886.

^{page 406 note 1} The Geological Agency of Lateral Pressure exhibited by certain Movements of Rocks, Proc. Boston Soc. Nat. Hist. vol. xviii. p. 272 (1876); see also ib. vol. xiv. and Proc. American Assoc, for the Advancement of Science, vol. viii. p. 285, and vol. xxii. part ii.Google Scholar

^{page 406 note 2} The Miner's Dictionary, by Hooson, William, 8vo. Wrexham, 1747 (under the head Knocker).Google Scholar