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Published online by Cambridge University Press: 01 May 2009
1 Geol. Mag. 1880, p. 299; and 1879, p. 203.Google Scholar
2 In my map as published in the Quarterly Journal, two lines, which unfortunately escaped my notice, have been accidentlly introduced, making it look as if slate existed in the Bickerton quarry in contact with the schist. The quarry, as described by Mr. Somervail, is entirely of chlorite schist, with slickensided bands.