Sarah Josepha Buell Hale (1851). “The Way to Live Well: And to be Well While We Live, Containing Directions for Choosing and Preparing Food in Regard to Health, Economy, and Taste”, p.19
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.153