Note 263 — ORATION.
Reading edition
Lyell's Principles of Geology (7th ed.), Vol. I. p. 216. Lyell's Travels in North America, Ch. 2. Horner's Anniversary Address, for 1847, before the London Geological Society, pp. 23-27. D'Archiac, Histoire des Progrès de la Géologie, Tom. I. p. 358.