Butler was afterwards entombed in the Castle of Vilvord, in Flanders, where he is said to have performed wonderful cures by means of Hermetic medicine. A monk of Brittany, who was one of his fellow-prisoners, having a desperate erysipelas in his arm, was restored to health in an hour by drinking almond milk in which Butler had merely dipped the stone. The next day at the rumour of this circumstance, the celebrated Helmont, who abode in the neighbourhood, went with several noblemen to the prison, where Butler cured, in their presence, an aged woman of a megrim by dipping the stone into oil of olives and then anointing her head. An abbess, whose arm was swelled, and whose fingers had been stiff for eighteen years, was also cured by a few applications of the same stone to her tongue. These cases are attested by the illustrious van Helmont in his works. JEAN D’ESPAGNET. This Hermetic philosopher is known to us by two treatises--_Enchiridion Physicæ Restitutæ_ and _Arcanum Philosophiæ Hermeticæ_, which, however, has also been claimed as the production of an unknown individual who called himself the _Chevalier Impérial_.[AA] “The Secret of Hermetical Philosophy” comprises the practical part of the _magnum opus_ and the Enchiridion, the physical theory on which the possibility of transmutation is founded. D’Espagnet is also the author of the preface to the _Tableau de l’Inconstance des Démons_, by Pierre Delancre. “The Arcanum of Hermetic Philosophy” is better known under the title of the “Canons of Espagnet,” and, as I have shown in the Introduction, it is claimed as a treatise on mystical alchemy. The author, however, very plainly states that “the science of producing Nature’s grand Secret is a perfect knowledge of Nature universally and of art, concerning the realm of metals; the practice whereof is conversant in finding the principles of metals by analysis.” Moreover, the authors whom Espagnet recommends as a guide to the student include those who, like Trévisan, are known to have spent their existence in practical alchemy. The Sethon-Sendivogius treatises are also respectfully cited. At the same time, it may be freely granted that much of the matter in the canons, though treating of a physical object, may be extended to the psychic side of the Hermetic art. FOOTNOTES: [AA] Ce chevalier, très-révérée des alchimistes, est mentionnée souvent dans la _Trompette Française_, petit volume, contenant une _Prophétic de Bombast sur la Naissance de Louis XIV._ On a, du Chevalier Impérial, le _Miroir des Alchimistes_, avec instructions aux dames pour dorénavant être belles sans plus user de leurs dards venimeux, 1609, 16mo. _Dictionnaire des Sciences Occultes._ ALEXANDER SETHON.