_On the formation of mould_. (_Trans. geolog. Soc._, 5 vol., 1837).
_Origin of the saliferous depots of Patagonia_. (_Journ. geol. Soc._, 2
vol., 1838).
_On the connection of the volcanic phenomena in South America_.
(_Transact. geolog. Soc._, 5 vol., 1838).
_On the parallel roads of Glen Roy_. (_Trans. Phil. Soc._, 1839).
_On the distribution of the erratic boulders in South America_.
(_Trans. geol. Soc._, 6 vol., 1841).
_On a remarkable bed of sandstone of Pernambuco._ (_Phil. Mag._, 1841).
_Notes on the ancient glaciers of Caernarvonshire_. (_Phil. May._, 20
vol., 1842).
_The structure and distribution of coral-reefs_, 1844.
_Geological observations on volcanic islands_, 1842.
_An account of the fine dust which often falls on the vessels in the
Atlantic Ocean_. (_Proc. geol. Soc._, 1845).
_On the geology of the Falkland island_. (_Journ. geol. Soc._, 1846).
_On the transportal of erratic boulders from a lower to a higher
level._ (Ibidem, 1848). _On the power of icebergs to make grooves on a
submarine surface._ (_Phil. Mag. Any._, 1855).
_Geological observations on South America_, 1846.