^{page 63 note *} Part I., “On the Fossil Plants collected during the Sinking of the Shaft of the Hamstead Colliery, Great Barr, near Birmingham,” Trans. Roy. Soc. Edin., vol. xxxv., part 6, p. 317, 1888Google Scholar.

^{page 63 note †} In North Staffordshire there are four coal fields or basins, known respectively as—(1) The Potteries Coal Field; (2) The Wetley and Shafferlong Coal Field; (3) The Goldsitch Moss Coal Field; (4) The Cheadle Coal Field and the Lower Coal Measures of the Churnet Valley. Of these, the largest and the most important coal field is that known as the Pottery Coal Field, which contains the principal seams of coal and ironstone found in North Staffordshire. It is also rich in organic remains.

^{page 63 note ‡} Memoirs of the Geological Survey of the United Kingdom, “The Iron Ores of Great Britain,” part iv.; The Iron Ores of the Shropshire and North Staffordshire Coal Fields, 1862.

^{page 64 note *} Loc. cit., p. 258.

^{page 64 note †} The Coal Fields of Great Britain, 4th ed. (1881), p. 183Google Scholar.

^{page 64 note ‡} “The Geological Features of the North Staffordshire Coal Fields; their Organic Remains, their Range and Distribution; with a Catalogue of the Fossils of the Carboniferous System of North Staffordshire,” Trans. North Staffordshire Institute of Mining and Mechanical Engineers, vol. x. pp. 1–189, with 9 plates, 1890Google Scholar.

^{page 65 note *} Loc. cit., p. 4.

^{page 65 note †} In regard to the Lower Coal Measures in the above Table, Mr Ward divides this series into two subdivisions—an Upper and a Lower group. The “Upper” group contains the principal seams of coal used for domestic and manufacturing purposes, and includes the whole of the measures occurring between the Ash or Rowhurst and the Winpenny coals. The “Lower” series consists of dark shales, sandstones, and purple-coloured rocks, with occasional grits and conglomerates. It includes four or five thin coals of little commercial value. Each group is distinguished by a distinct series of coal beds, and equally well characterised by its organic remains.

^{page 65 note ‡} “The North Staffordshire Coal Field, with the Ironstones contained therein,” Trans. North Staffordshire Inst. of Mining and Mechanical Engineers, vol. i. p. 102, 1879Google Scholar.

^{page 67 note *} In Mr Ward's Geology of the Coal Field this division is called the Lower Thick Coal Measures, but as the rocks included in this group are evidently the equivalents of the Lower Coal Measures of other Coal Fields, I have omitted the word “Thick,” as tending to create confusion.

^{page 67 note †} In regard to some fossils found in “a bed of grey shaley marl, or ‘clutch,’ lying a few feet above the Gin Mine, or Golden Twist Coal,” Mr Ward states (loc. cit., p. 42) that Mr John Young, F.G.S., Glasgow, informed him “that the specimens in the list agree closely with those found in the Upper Coal Measures of Scotland.” It must be distinctly stated here that the term Upper Coal Measures of Scotland, as used by Mr Young, is only of local application, and does not at all correspond to the Upper Coal Measures of Britain. The rocks called Upper Coal Measures of Scotland are only the Upper Series of the Lower Coal Measures of Britain.

^{page 68 note *} Loc. cit., p. 14.

^{page 68 note †} See Rep. Brit. Assoc., 1886, p. 626Google Scholar; also Trans. Roy. Soc. Edin., vol. xxxv., part 6, p. 317, 1888Google Scholar.

^{page 71 note *} “Fragments Paléontologiqnes,” Bul. de l'Academie royale de Belgique, 2me sér., vol. xxxviii. pl. ii. figs. 1, 2, 3, 1874Google Scholar.

^{page 73 note *} This species has previously been only found in the Middle Coal Measures in Britain, and the bed from which the Staffordshire specimen was derived is high up in the Lower Coal Measures, and perhaps on a horizon with the lower part of the Middle Coal Measures of other areas. When the three divisions—the Upper, the Middle, and the Lower Coal Measures—are present in the same coal field, the exact position of the dividing line is often a matter of individual opinion, though the different facies of the fossils of the various divisions, when taken as a whole, is characteristic of each.

^{page 77 note *} “The Geological Features of the North Staffordshire Coal Fields, their Organic Remains,” &c., Trans. North Stafford. Institute of Mining and Mechanical Engineers, vol. x. 1890Google Scholar.

^{page 77 note †} Abdrücke u. Vers. d. Zwick. Schwarzk., p. 63, pl. xi. figs. 7, 9, 10, 1835Google Scholar.

^{page 79 note *} This is the uppermost seam in the Lower Coal Measures, see note, ante, p. 73.

^{page 83 note *} Conophoroides anthernis, König., Icones foss. sectiles, pl. xvi. fig. 200; copied by Brongniart.—Lepidostrobus Hist d. végét. foss., vol. ii. pl. xxiii. fig. 6, and named by Schimper, Lepidostrobus radians. Traité d. paleónt. végét, vol. ii. p. 63Google Scholar.

^{page 85 note *} Koniglich Preussischen geologischen Landesanstalt, Berlin, 1887Google Scholar.

^{page 86 note *} The shales have been carefully prepared for me by Mr James Bennie, in the manner recommended in our paper in the Proc. Roy. Phys. Soc. Edin., vol. ix. p. 92Google Scholar, to whom for his assistance I am again much indebted.

^{page 86 note †} The numbers refer to the working list of localities from which collections have been made at various times The contents of localities 1 to 37 have been already published. See Proc. Roy. Phys. Soc., vol. ix. pp. 93–102Google Scholar.

^{page 89 note *} “Notes on some Fossil Trees in a Marl Pit at Joiner's Square, near Hanley,” Report North Staffordshire Nat. Field Club for 1880. With a Plate.

^{page 91 note *} The foregoing list and these particulars have been supplied by Mr Wm. Hampton.

^{page 96 note *} Fossil Flora, vol. iii. pl. ccxx.

^{page 96 note †} Trans. Roy. Soc. Edin., vol. xxxiii. pl. xxiii. fig. 4.

^{page 97 note *} See note, ante, p. 73.

^{page 97 note †} See note, ante, p. 79.