On Alchemy

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Chapter XXIIII. Reasons of those who deny the art regarding intermediate minerals Intermediate minerals include substances like salts, alums, and vitriols, which were seen as neither fully metallic nor purely volatile., or vegetables, or any assumed mixture of things. 54

XXV. Concerning the natural principles of metallic bodies, according to the opinion of the ancients. 55

XXVI. Concerning the natural principles of metals, according to the opinion of the moderns and the author. 56

XXVII. Division of things to be said concerning the three principles: namely Sulfur, Arsenic, and Quicksilver. 60

XXVIII. Concerning Sulfur. 61

XXIX. Concerning Arsenic. 63

XXX. Concerning Quicksilver, or Mercury Quicksilver. In the same place.

XXXI. Concerning the effects of the principles of nature, which are metallic bodies. 64

XXXII. Concerning the Sun, or Gold Sol. 65

XXXIII. Concerning the Moon, or Silver Luna. 67

XXXIIII. Concerning Saturn, or Lead Saturnus. 68

XXXV. Concerning Jupiter, or Tin Iovis. 69

XXXVI. Concerning Venus, or Copper Venus. In the same place.

XXXVII. Concerning Mars, or Iron Mars. 70

XXXVIII. Division of the things to be discussed in this part, with an introduction to the perfection to be taught in the second book. 72

XXXIX. Concerning Sublimation Sublimation is a process where a solid is heated into a vapor and then condensed back into a solid, usually to purify it., why it was invented. 74

XL. What Sublimation is, and concerning the three degrees of fire to be observed in it. 76

XLI. Concerning the dregs original: "fecibus." This refers to the solid residue left behind during purification. of metallic bodies to be added to the spirits in sublimation, and their quantity. 78

XLII. Concerning the moderation of fire in Sublimation. 80

XLIII. Concerning the errors to be avoided regarding the quantity of dregs and the arrangement of the furnace during the sublimation of Sulfur and Arsenic. Also concerning the building of the furnace and the selection of wood. 81