Despair over Thirteenth Century Learning: An excerpt from Bacon's 1271 work, Compendium Studii Philosophiae. Modernized version of the Brewer translation, provided by the Internet Medieval Sourcebook Project.
On Experimental Science: An excerpt from Bacon's 1268 work, Opus Tertium. Provided by the Internet Medieval Sourcebook Project.
The Mirror of Alchemy: A brief tract attributed to Bacon, here in an English edition first published in 1597.
Tract on the Tincture and Oil of Antimony: A 1985 translation by Kjell Hellesoe of this alchemical treatise by Bacon.