I N D E X.

XII. Diverse opinions of those who suppose that the Art The "Art" refers to Alchemy or the Great Work of transmutation. exists. 34

XIII. Reasons of those denying the Art is based in sulfur. 35

XIIII. Refutation of the preceding reasons. 36

XV. Reasons of those denying the Art is based in Arsenic, and their refutation. 37

XVI. Reasons of those denying the Art is based in Sulfur, Quicksilver original: "Argento uiuo", Tutia A medicinal zinc oxide crust found in furnaces., Magnesia, Marcasite, and Sal Ammoniac, and their refutation. ibid.

XVII. Reasons of those denying the Art is based in spirits Volatile substances that vaporize when heated., together with the fixing of bodies, and their refutation. 38

XVIII. Reasons of those denying the Art is based in bodies, and first in white lead—that is, tin, or Jupiter—and their refutation. 39

XIX. Reasons of those denying the Art is based in black lead Lead (Plumbum nigrum).. 40

XX. Reasons of those denying the Art is based in the mixing of hard bodies with hard, and soft with soft bodies. 41

XXI. Reasons of those denying the Art is based in the mixing of hard bodies with soft, and perfect with imperfect. 42

XXII. Reasons of those denying the Art is based in the extraction of the soul, or the governance of fire. ibid.

XXIII. Reasons of those denying the Art is based in glass and gems, and their refutation. 43

XXIIII. Reasons of those denying the Art is based in middle minerals, or vegetables, or the mixture of any things whatsoever. ibid.

In the third part, concerning natural principles and their effects, these things are contained.

XXV. On the natural principles of metallic bodies, according to the opinion of the ancients. 44

XXVI. On the natural principles of metals, according to the opinion of the moderns and the author. 45

XXVII. Division of the discussion concerning the three principles: namely Sulfur, Arsenic, and Quicksilver. 47

XXVIII. On Sulfur. ibid.

XXIX. On Arsenic. 49

XXX. On Quicksilver, or Mercury. ibid.

XXXI. On the effects of the principles of nature, which are the metallic bodies. 50

XXXII. On the Sun original: "Sole", or Gold. 51

XXXIII. On the Moon original: "Luna", or Silver. 52

XXXIIII. On Saturn, or Lead. ibid.

XXXV. On Jupiter, or Tin. 53

XXXVI. On Venus, or Copper original: "ære". 54

XXXVII. On Mars, or Iron. 55