[70] On the date of the conquest of Lancashire see “Manchester Phil. and Lit. Soc. Proc.” 1873, p. 25. In working out this somewhat difficult question, I am indebted to the Rev. J. R. Green for most valuable aid.
[71] Gildas, Nennius, the Annales Cambriæ, Bæda, and the Anglo-Saxon Chronicle are the authorities for these statements.
[72] The section of the Victoria Cave published by Mr. Tiddeman in the Geological Magazine expresses the relation of the clay with boulders to the cave-earth with greater clearness than I could observe on the ground. The laminated clay is not yet proved to occupy such a large area in the cave, or to be so regularly deposited, or so clearly defined. It occurs at various levels in the mass of the grey clay in the section (to be seen on May 21, 1873), above and below the cave-earth.—“The Older Deposits in the Victoria Cave,” Geol. Mag. x. p. 11.
[73] See Essays by the writer in “Pop. Sci. Rev.” Oct. 1871: “On the relation of the Pleistocene Mammalia to the Glacial period.” “On the Classification of the Pleistocene Strata of Europe by means of the Mammalia;” Quart. Geol. Journ. June 1872.
[74] Mém. de l’Acad. Imp. des Sciences de St. Pétersbourg, 6e Sér. tome v. 1849, Pl. xiii. Fig. 1.
[75] See my “Pleistocene Mammals of Yorkshire,” Geol. and Polytechnic Soc. of West Riding of Yorks. Leeds, Aug. 6th, 1866.
[76] See Brit. Ass. Reports, Bradford, 1873.
[77] Mem. Anthrop. Soc. vol. ii. p. 358.
[78] Sussex Archæol. Coll., 1863.
[79] Trans. Midland Sci. Ass., Sess. 1864–5, pp. 1–6, 19, 29, Plates 1–15, “Report on the Exploration of Thor’s Cave,” by E. Brown, Esq.