1866. “On the Metamorphic Lower Silurian Rocks of Carrick, Ayrshire,” _Quart. Journ. Geol. Soc._, vol. xxii., pp. 513-34; _Phil. Mag._, vol. xxxii., pp. 154-5; _Geol. Mag._, vol. iii., pp. 321-2. “On the Metamorphic Origin of certain Granitoid Rocks and Granites in the Southern Uplands of Scotland,” _Geol. Mag._, vol. iii., pp. 529-34. 1867. “On the Buried Forests and Peat Mosses of Scotland, and the Changes of Climate which they indicate,” _Trans. Roy. Soc. Edinburgh_, vol. xxiv., pp. 363-84; _Proc. Roy. Soc. Edinburgh_, vol. v., pp. 635-7; _Geol. Mag._, vol. iv., pp. 20-3. “Hydrothermal Origin of certain Granites and Metamorphic Rocks,” _Geol. Mag._, vol. iv., pp. 176-82. “On the Metamorphic Origin of certain Granites, etc.,” _ibid._, vol. iv., pp. 287-8. 1868. “On Denudation in Scotland since Glacial Times,” _Trans. Geol. Soc. Glasgow_, vol. iii., pp. 54-74; _ibid._, vol. v., pp. 19-25. “Note on the Discovery of _Bos primigenius_ in the Lower Boulder-clay of Scotland,” _ibid._, vol. v., pp. 393-5, 535-6. 1869. “Additional Note on the Discovery of _Bos primigenius_, in the Lower Boulder-clay at Crofthead, near Glasgow,” _ibid._, vol. vi., pp. 73-5. 1870. “On the Age of the Stratified Deposits, with Mammalian Remains, at Crofthead, near Glasgow,” _ibid._, vol. vii., pp. 53-7, illus. 1871. “Carboniferous Formation of Scotland” (remarks on Mr Croll’s letter), _Trans. Geol. Soc. Glasgow_, vol. iv., pp. 78-80; _Geol. Mag._, vol. vii., 1870, p. 298. “On Changes of Climate during the Glacial Epoch,” _Geol. Mag._, vol. viii., pp. 545-53; vol. ix., 1872, pp. 23-31, 61-9, 105-11, 164-70, 215-22, 254-65. “The Carboniferous Formation of Scotland,” _Trans. North Eng. Inst. Min. Engin._, vol. xx., pp. 131-57; _Trans. Glasgow Inst. Engin._, vol. xiv., pp. 5-31. 1872. “A. E. Törnebohm’s Theory of the Origin of the Swedish Asar,” _Geol. Mag._, vol. ix., pp. 307-9, illus. “On the Geological Position and Features of the Coal- and Ironstone-bearing Strata of the West of Scotland,” _Journ. Iron and Steel Inst._, vol. ii., pp. 8-24. 1873. “On the Theory of Seasonal Migrations during the Pleistocene Period,” _Geol. Mag._, vol. x., pp. 49-54, illus. “The Antiquity of Man in Britain” (a lecture), _Geol. Mag._, vol. x., pp. 175-9. “On the Glacial Phenomena of the Long Island or Outer Hebrides,” _Quart. Journ. Geol. Soc._, vol. xxix., pp. 532-45; _Geol. Mag._, vol. x., pp. 377-9. 1874. “Note on the Occurrence of Erratics at Higher Levels than the Rock-masses from which they have been derived,” _Trans. Glasgow Geol. Soc._, vol. iv., pp. 235-41; _Geol. Mag._, dec. ii., vol. i., pp. 566-7. _The Great Ice Age and its Relation to the Antiquity of Man_, pp. xxiii + 575, 17 pls., 8vo, London. 1875. _Geology_ (Chambers’s Elementary Science Manuals), pp. 96, illus., 8vo, London. 1876. “Origin of Lake Basins,” _Geol. Mag._, dec. ii., vol. iii., pp. 139-40.