Florence, Bibliotheca Riccardiana MS. 1243. [S. III. 18.] 94 folios. Paper. 144x110mm. 15th Century. [Various alchemical secrets, including - ] 1. f2-9 [Alphabetical list of recipes.] 2. f17 Liber fratris Alberti ordinis predicatorum extractus de secretis philosophorum... [Series of recipes.] 3. f49 Incipit flos artis alkimie. 4. f51 [Recipes.]