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Published online by Cambridge University Press: 01 May 2009
page 237 note 1 Three miles N.N.W. from Oxford.
page 238 note 1 Geology of Oxford, pp. 139, 297, and 495.
page 238 note 2 Mem. Geol. Survey, Geol. of Sheet No. 45 S.W., pp. 14, 26, and 30.
page 238 note 3 Ibid., Geol. of Sheet No. 45, p. 9 et seq.
page 238 note 4 Described as a uniform bed of clunch (clay) with ironstone.