^{page 303 note 1} “The Geology of the County between Newark and Nottingham”: Mem. Geol. Surv., 1908, pp. 35–54, and in Summaries of Progress for 1907–8.

^{page 304 note 1} The term originally used by Mr. G. W. Ormerod, because the surface of some the beds had a watery appearance, like watered silk.

^{page 304 note 2} “The Geology of the County around Lincoln”: Mem. Geol. Surv., 1888, p. 8.

^{page 306 note 1} Sorby (Quart. Journ. Geol. Soc., 1908, vol. lxiv, p. 197, p1. xivGoogle Scholar) has shown how the sandy ashes of the Langdale slates were deposited sometimes as ripple-drift, which became torn up and contorted as the velocity of the sediment-bearing current increased. Sorby's experiments seem to show that a current of about 2 inches per second in shallow water would suffice to form ripples in sediment as fine as that of these skerries. A velocity of 6 inches per second would wash up and destroy them.

^{page 306 note 2} Cape of Good Hope, Thirteenth Annual Report of Geol. Commission for 1908, p. 107.Google Scholar

^{page 308 note 1} The coarser sediment of the higher skerries was probably wind-borne to the face of the waters.

^{page 308 note 2} I have only seen one slab with casts of sun-cracks from the Keuper Marls of this district.

^{page 308 note 3} DrSwinnerton, H. H. has recently discovered footprints and fish-remains in the Waterstones of Sherwood, Nottingham (Geol. Mag., 06, 1910, p. 229)Google Scholar.

^{page 308 note 4} According to Mr. Henry Preston, Grantham.

^{page 309 note 1} Massive gypsum is recorded from a lower horizon at Clarborough, north of Retford.

^{page 309 note 2} Rep. Brit. Assoc. for 1907, pp. 506, 507.

^{page 310 note 1} “Desert Conditions in Britain”: Trans. Geol. Soc. Glasgow, 1898, vol. xi, pt. i, pp. 87, 89, 90Google Scholar.

^{page 310 note 2} Especially if humid conditions prevailed in the upper parts of the inland basin as in the case of the Dead Sea and the Great Salt Lake.