^{page 501 note 1} Noticed by , H. B. W., Geol. Mag., Vol. VIII., 1871, p. 152.Google Scholar

^{page 502 note 1} When surveying Black Down (Mendip), Mr. J. H. Blake came across an old Shaft, with machinery and building, now abandoned, which had been sunk in the Lower Limestone Shales to a considerable depth in search of coal.—H. B. W.

^{page 502 note 2} By H. B. W.

^{page 502 note 3} Mem. Geol. Survey, vol. i.

^{page 502 note 4} Report of Coal Commission, p. 163.

^{page 503 note 1} Recorded by MrMoore, C., Quart. Journ. Geol. Soc., vol. xxiii., 1867, p. 457.Google Scholar

^{page 503 note 2} In Mr. Prestwich's opinion, coal would not be found at a depth less than from 1500 to 2000 feet. Report of Coal Commission, p. 163.

^{page 503 note 3} Mem. Geol. Survey, vol. i. Mr. Prestwich thinks “it is possible that the great thickness of the Secondary strata south of the Mendips may arise from a greater denudation of the Palæozoic rocks on the south than on the north of the Mendips, in which case a larger portion of the Coal-measures may have been there removed.” Report of Coal Commission, p. 163.

^{page 504 note 1} Report of Coal Commission, vol. i., pp. 147, 163.

^{page 505 note 1} Mr. Prestwich remarks that a few trials for coal would not be very costly, and that they could hardly fail in important results, as in case of failing at once to hit the Coal-measures, we might possibly find the Lower Greensands, and obtain its pure and abundant waters, a consideration of high importance to the metropolis. Report of Coal Commission, p. 165.—This is not the place for going fully into the question of the occurrence of Coal in the south-eastern counties, but I agree with Sir Roderick Murchison that it is highly improbable that a remunerative Coal-field will ever be discovered in that area.—H. B. W.