The sample analysed was derived from a well-boring made at East Ham by Messrs. C. Isler & Co., who gave the following table of the strata passed through:—

The sample was taken from the stratum of clay between 17 and 76 feet below the surface.

As bearing upon the phenomenon of the spontaneous combustion of bituminous beds of coaly or carbonaceous matter of any geological age (charged with pyrites) in sitû, the account given by Sir John Richardson, C.B., F.R.S., in his “Arctic Searching Expedition; a Journal of a Boat-voyage through Rupert's Land and the Arctic Sea,” 1851, vol. i, may not be without interest in this connection.

Early in 1904, whilst spending a holiday at Silverdale, near Carnforth, I noticed at the roadside near the Silverdale Hotel several heaps of a peculiar mottled limestone which was being broken up for road-metal. The resemblance to specimens I had seen from Derbyshire struck me at once, and I was not long in locating the quarry from which the material had been derived. The exposure of the rock is situated near the turn of an old cart track leading from Silverdale Green to Burton Well. When I visited the place there was a section visible of about 12 to 14 feet long and 2 to 3 feet deep. On the top was a thin layer of surface soil with vegetation on it. The floor of the quarry was also of the same mottled limestone. The strata here and in the immediate neighbourhood are rolling with a general dip of 10° E.

Since the appearance of my paper on Loricula Darwini in the November Number of this Magazine (pp. 491–9) my attention has been called by Mr. C. D. Sherborn to two American Loriculæ described by W. N. Logan, “On some new Cirriped Crustaceans from the Niobrara Cretaceous of Kansas,” U.S.A., published in the Kansas University Quarterly (series A, October, 1897, vol. vi, No. iv, pp. 187–9, 8vo) and in the University Geological Survey of Kansas (vol. iv (Paleontology), pt. viii, 4to, Arthropoda, pp. 498–501, pi. cxi) under the names of Stramentum haworthii, Williston, type-specimen figured much enlarged, and S. tabulatum, Logan. The other two species on p1. ex, figs. 3–5, of the same work, described under the name of Squama spissa and S. lata, Logan, are quite distinct from Loricula, but are said to have been found adhering to a fragment of shell of Inoceramus by their entire length. The arrangement of the capitulum and peduncle differ very widely from those of Loricula and resemble Pollicipes.