Part I. (a) Philosophical furnaces : in 5 parts and an Appendix.

(b) Of the tincture of gold, or the true Aurum Potabile.
(c) The mineral work. 3 parts.
(d) The apology of J. R. G. against the lying calumnies of Christopher Earner.
(e) Miraculum mundi, etc., in two parts.
(f) A treatise of the nature of salts, in one part.
(g) A treatise of the signature of salts, metals and planets, (h) The consolation of navigators, (i) A true and perfect description of extracting good tartar from
the lees of wine, (j) The prosperity of Germany, in 6 parts.