first complete edition of a theosophical work on the origin, nature, characteristics, and uses of salt, sulfur, and mercury; the first part, on salt, appeared separately in 1719. "Welling . . . leaned toward a cabalistic interpretation of chemical and mineral phenomena . . . Goethe studied this book intensively"--Hoover 872 (1719 edition). Ferguson II, 543 (this edition).
