The Letter of Roger Bacon Concerning the Marvelous Power of Art and Nature and the Nullity of Magic

Bacon's Recipe for Gun Powder

Sed tamen salis petrae. VI. Part V. NOV. CORVLI. ET V. sulphuris, et sic facies toniitrum et coruscationem: sic facies artificium. But, however, of saltpetre take six parts, live of young willow (charcoal), and five of sulphur, and so you will make thunder and lightning, and so you will turn the trick. Bacon's recipe…

Dec 14, 2011 1

• chemistry
• poetry