The Effects of cross and self fertilization in the vegetal kingdom, 1876.
On the different Forms of Flowers on Plants of the same species, 1877.
The Power of Movement in Plants, 1880.
GEOLOGIA
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).