Simon, of Cologne, -1442?

The mirror of alchimy, composed by the thrice-famous and learned fryer, Roger Bachon, sometimes fellow of Martin Colledge: and afterwards of Brasen-nose Colledge in Oxenforde. Also a most excellent and learned discourse of the admirable force and efficacie of art and nature, written by the same author. With certaine other treatises of the like argument.