Leiden MS. Vossianus Chym. Q. 1. 88 folios. Paper. 252x179mm. 16th Century [1570.] Jacobus Conrad Praetorius, Collectanea Chymica. 1. f1-4 De Mercurii generatione. 2. f4 Usus Mercurii. 3. f5-16v Collectanea Chymica e variis manuscriptis congesta. 4. f19-23 Gerardus Dorn, Processus ad lapidem philosophorum; Methodice institutus. 5. f24v-28v Practica des Bohaimen wergks [in German.] 6. f29-40 Ulricus Faber, Warhaffte und gewisse Anzaigungen undt aus der Natur und Philosophy... 7. f40-47 [Various recipes and processes, in German.] 8. f50 Observationes ad sequentem tractatum plenius intelligendum imprimis necessariae. 9. f51-64 Quinta pars Spagyricae et Cabalae. 10. f64v-70 Abrahami Mauorts Sententia de P. Lautensacks Libris. 11. f71-74v Scotographiae chymicae characteres. 12. f75 [Drawing of distillation apparatus.] 13. f75v Alexipharmicon Nassovianum. 14. f76-80 Sequuntur 7 praestantissima arcana medicamenta Catholica, sua virtute omnia alia longe superantia, a philosophis occultata diu. 15. f82-84v [Recipes of 'Mayster Benedict schmyedts von München' and 'Jacobus Ferinarius Vratislaviensis medicus'.] 16. f85-86 Aenigmata de tinctura. Questiones 4 et Responsiones. 17. f86 [Recipes.]