Surgeons had appointed a time to cut it off. Now, who is there, that upon reading this Account would not think the Doctor a very happy Man, that was Master of so valuable a Secret; but alas! How satisfactory would it be to the World if the hundredth part of the Remedies that have been handed down to us, had a Power of effecting those things that are ascribed to them, without being attended with any ill Consequences. I assure you, Reader, I have made use of this very Remedy, for since I mentioned it as the Doctor’s having great Success from it; I met with the true Preparation of it, as it was communicated to Sir _Kenelm Digby_ by Doctor _Havervelt_, or _Haberfield_, for the Cure of _Cancers_, the _King’s Evil_, and old _Ulcers_. It is as follows. ℞ _Dantzick Vitriol, calcine it till it be yellow, then grind it with Salt, or Salt Petre, the ordinary proportion with this Sublime Mercury, which Sublime once again by it self, then take only the Cristaline part of it; of this take_ ℥i, _grind it to a Subtile Powder in a Glass Mortar with a Glass Pestle._ Put this into a Glass Bottle, and pour upon it a Quart of Fountain Water, stop the Bottle close, and let it stand thus for some Days, shaking it often; after it is well settled pour off the clear, and filtre it; take a Spoonful of this Liquor, which put into a Vial, and put to it two Spoonfuls of fair Water; shake the Vial well, and let the Patient Drink it in the Morning Fasting: As to the quickness of its Operation, and the making the Patient Hungry, I found it at first to agree with what Mr _Boyle_ says of it; but upon giving it three or four times, the Patient would afterward complain of a Languidness, which was ushered in by a Sickness at the Stomach; after this, they would be attended with a Heat or Soreness of the Throat, immoderate Thirst, convulsive Motions of the Stomach, _&c._ Some of which Inconveniencies would continue for many Hours together. It was upon Account of the Melancholy Reflections of bringing the Patients into such Disorder, and their Unwillingness to endure such Fatigues, that I had never Courage enough to proceed in this Method. I cannot but say, upon the Alteration I found in a Patient of mine, from the use of six Doses of this Medicine, that it may as well as some other churlish Remedies, cure some flat ulcerated Cancers, where there is no Tumour to dissolve, in Persons that are capable of often repeating it, which I think is sufficient to put us upon farther Enquiries, that we may be able to accomplish such Undertakings without bringing upon the Patient such a Train of mischievous Accidents. _POSTSCRIPT._