Paris, du Muséum d'Histoire Naturelle MS. 2034. 47 folios. Paper. 245x175mm. 17th Century. Traitté chimique contenant le secret surnaturel de la pierre des sages. [Text in the hand of Claude Alexandre Séguier perhaps inspired by Edward Kelley's tract on the philosophers' stone in Ashmole's Theatrum Chemicum Britannicum.] [With a pen drawing in cross section of an alchemical furnace.]