CROLL, Oswald (Crollius). La royalle Chymie de Crollius, traduite en francois par J.Marcel de Boulene. 1627.

Second French edition of this collection of treatises on alchemy of Oswald Croll, one of the first disciples of Paracelsus, translated by the surgeon Jean Marcel Boleyn.
The book is divided into three treaties:
- The first offers a admonitoire Preface, containing the very deep mysteries & Philosophy rarest of both natural grace, reaching the excellence of medicine Chymical, and magnitude of the Microcosm;
- The second is "la Royalle chymie de Crollius", describing various remedies and recipes of Medicine;
- The third one, separate pagination, is finally a Traict signatures, or true and deep anatomy of the great and little world. This part contains many signs and alchemical symbols often lacking.
Edition with engraved title page.