Thomas Lovell Beddoes, Thomas Forbes Kelsall, Charles Dacres Bevan (1851). “The Poems, Posthumous and Collected: Death's jest-book. The brides' tragedy”, p.11
Sir Charles Lyell, Gérard Paul Deshayes (1830). “Principles of Geology: Being an Attempt to Explain the Former Changes of the Earth's Surface, by Reference to Causes Now in Operation”, p.255