Published online by Cambridge University Press: 01 May 2009
For many years my thoughts have been occupied with the phenomena of eruption at or near the surface, and although a detailed study of the Vesuvian volcano and its products gave me the key to the mechanism of eruption and injection of igneous matter near the surface, I was always at a loss to understand, on the older theories, how lava could ever start upwards in fissures
page 246 note 1 These conclusions and propositions, contrary to my wishes, were not allowed to appear in the memoir at the time it was published, Q.J.G.S. Feb. 1884.