Chapter XIII. : concerning the III Effects of Nutrimental Salt. Chapter XIV. : concerning

Vitriol. Chapter,XV. : concerning the Specie^t of Vitriol and the Tests of it. Chapter XVI.: concerning the Virtues of Vitriol, crude or calcined, in Medicine. Chapter XVI L: concerning the Threefold Sulphur of Minerals. Chapter XVI 11. : concerning Anenic used for Alchemy.