^{page 569 note *} Trans. Geol. Soc. London, 2nd ser., vol. vi., 1842, p. 491Google Scholar.

^{page 569 note †} Mem. Geol. Survey Gt. Brit., “Iron Ores of Great Britain,” part iii., 1861.

^{page 569 note ‡} Verhandl. d. K. K. Geol. Reichsanstalt, 1884, No. 7, p. 135.

^{page 570 note *} According to Stur.

^{page 572 note *} I have seen a somewhat similar mode of tabulation adopted by a recent palæontological writer, but I cannot remember by whom.

^{page 576 note *} Trans. Roy. Soc. Edin., vol. xxxiii. part ii. pp. 335–417Google Scholar.

^{page 579 note *} A more complete synonymy will be found at the references marked *.

^{page 599 note *} In Sternb., Vers. ii. p. 177, pi. lxviii. fig. 1.

^{page 600 note *} Zeiller, Flore foss. d. bassin houil. d. Valen., p. 442, pi. lxvi. fig. 1. I have had the pleasure of seeing this specimen, of which the figure only shows a small portion, and the nature of its foliage is very different from that of the South Wales Lepidodendron which I here place under L. longifolium.

^{page 600 note †} Proc. Roy. Phys. Soc., vol. x. p. 375, 1891Google Scholar.

^{page 600 note ‡} See ante, p. 598.

^{page 604 note *} See On Lepidophloios, and on the British species of the genus, ante, p. 555.

^{page 608 note *} Flore foss. d. bassin houil. d. Valen., pp. 548–549.

^{page 608 note †} Hist. d. vegét foss., p. 476, pl. cxliv. fig. 2.

^{page 608 note ‡} Ibid., p. 474, pi. clxiv. fig. 5.

^{page 608 note §} Ibid., p. 472, pi. clxv. fig. 2.

^{page 608 note ∥} While studying this group, I have to express my deepest obligation to Mons. Zeiller for sending me for examination specimens from the French Coal Field, including some he has figured in his Flore foss. d. bassin houil. Valenciennes.