John Wilkins (1802). “The Mathematical and Philosophical Works of the Right Rev. John Wilkins, Late Lord Bishop of Chester: To which is Prefix'd the Author's Life, and an Account of His Works; in Two Volumes”, p.134
Francis Bacon, William Rawley (1858). “The Works of Francis Bacon, Baron of Verulam, Viscount St. Alban, and Lord High Chancellor of England: Literary and professional works”, p.726