IN answer to this, I confess, I have heard it affirm'd (but not by a Physician) that the Loadstone hath withdrawn the Inflamation and given Ease in the Gout, and by changing the Application of it from one side to the other, has at length chas'd it away, to the perfect recovery of the Patient; but in any other Case, excepting your own, I never heard of a Cure so much as facilitated or attempted to be perform'd thereby; therefore, as the Use of it in any Disease is quite Foreign to the common Practice of Physick, if others, as well as your self, have receiv'd Benefit by this new Discovery, I think not my self oblig'd to account for it, till it becomes practical among my own Fraternity, and then it will be Time enough for any Physician to give his Thoughts thereon; besides, I am a Stranger to the Preparation prescrib'd to you by your _Genius_, and without the knowledge of that material Secret, it is impossible for any Physician, in your Case, to make a clear Judgment, or to know which of the two your Cure is chiefly owing to, the Powder or the Loadstone; for how far the latter may operate upon a Body prepar'd by _Pulvis Martis_ or other Chalybeates, I shall not pretend to determine, tho', for ought I know, wonderful Cures may be perform'd in that way, but upon what Reason in Nature, such a new System can be founded, seems very remote from my present understanding; but, since you are become sole Master of so wonderful a Secret, my Advice is, that you keep the _Recipe_ to your self, in Obedience to your _Genius_, and tho' you Assist others, never to do it without Fee or Reward, for all useful Discoveries ought to be render'd Profitable. IN answer to the last Article of your Request, I shall now proceed to say something of Sympathy, and the Cures reported to have been done thereby. The Sympathetick Powder, so highly esteem'd about a hundred Years since, by Men of Art in this Kingdom, was first brought into _Europe_ by a Religious _Carmelite_, who in his Travels thro' _India_, _Persia_, and _China_, had made himself Master of this Secret, and from some of those _Eastern_ Countries, came over into _Tuscany_, where he perform'd many considerable Cures by this occult Method, to the great Astonishment of the most eminent Physicians and Surgeons in those Parts; insomuch that the Duke of _Tuscany_ himself was very desirous of becoming Master of this surprizing _Arcanum_, but, the honest Fryar by many handsome Excuses brought himself off, and would not be prevail'd upon to communicate his _Nostrum_ to his Highness.