— For the philosophers of antiquity, both Pagan and Christian, should.

Compendium Alchymiæ et Naturalis Philosophiæ. 12. Lapidarium. 13. Lux Mercuriorum. 14. Experimenta. 15. Ars Compendiosa vel Vademecum. 16. De Accurtatione Lapidis. Several other tracts besides these are considered by Dioscorides and Pliny as.