Vienna, Österreichen Nationalbibliothek MS. 5489 [Med. 183.] 99 folios. Paper. Quarto. 15th Century. 1. f1-48v Albertus Magnus, Tractatus chemicus, qui rubricatur 'semita recta'. 2. f49-94v [Various formulae and diverse experiments in the use of alchemical, metallurgical and other arts of this sort, partly in Latin and partly in German and written in different hands.]