1. Brown Robert (1773–1858), first Keeper of Botany at the British Museum, gathered together a large collection of petrified woods from different parts of the world. Most of these specimens are now incorporated with the plant collections in the Geological Department of the British Museum.
2. Johnston : “Geology of Tasmania,” 1888, pp. 215 (table) and 294.
3. On the Leaf-beds and Gravels of Ardtun, Carsaig, &c., in Mull