——— on the Structure of the Woody Zone of an Undescribed Form of Calamite, Mem. Lit. Phil. Soc. Manchester, vols. iv. and viii. 3d series.
——— on Volkmannia Dawsoni, ibid. 1870-71.
——— on Zamia gigas (Williamsonia gigas), Linn. Trans., xxvi. 663.
——— on the Organisation of Fossil Plants of the Coal Measures, Part I., Calamites, Phil. Trans. R.S.L., vol. 161, p. 477.
Witham, on the Structure of Fossil Vegetables.
Yates, on Zamia gigas, Proceed. Yorkshire Phil. Soc., April 1847.
Young, J., and Armstrong, Jas., on the Carboniferous Fossils of the West of Scotland, Trans. Geol. Soc. Glas., vol. iii.
Besides geological treatises such as those of Ansted,
Beudant, Jukes, Lyell, and others.