Though this _Problem_ at first View may seem to be too near allied to that which proves the Impossibility of curing cancerous Tumours, whether ulcerated or not, by Salivation; yet in regard there are some Persons, that tell us the Disease is superable by some internal Remedies, which operate after a quite different Manner, to those generally given to procure a Salivation, we shall enquire into one of the most considerable of them, related by a Person whose Memory we have a very great Value for. And we shall the rather take Notice of this particular Remedy, because we have elsewhere spoke of the Success of it. It were no very difficult Matter for me to mention several internal Medicines, out of our Chirurgical Writers, more especially those that have been Favourers of Chemistry; but I shall purposely decline it, because to speak freely, I suspect that most of the Remedies, though much has been said in the Praise, have not been sufficiently examined by those that recommended them. To this we may add, that had the Authors of them considered the vast Difference there is to be observed in Cancers, they would not have so suddainly and positively determined, that their Medicines were of use in these Cases in general; seeing we must have regard to absolutely different Intentions, in those that are not ulcerated, and those that are, and those that are a hard Tumour, and those that are flat, and likewise when they are conjoined with Circumstances, which are often enough to be met with. The Honourable Mr _Boyle_ in his _Usefulness of experimental Philosophy_, tells us, that he was informed by credible Persons, of a certain _English_ Woman above sixty Years of Age, who had lain long indisposed with a Cancer in her Breast, in an Hospital in _Zeeland_, and was by Doctor _Harberfeld_, with one single inward Remedy perfectly cured in three Weeks; the Relation was made by a _Doctor of Physick_, who was an Eye Witness of the Cure, and another Person who not only saw the Cure, but knew the Woman before, and out of Charity, carried her to him that healed her. Our Author was informed, that the _Chemical Liquor_ the Doctor constantly made use of, does in the Dose of about a Spoonful or two, work suddainly and nimbly enough by Vomit, but hath very quickly ended it’s Operation, so that within an Hour, or less, after the Patient has taken it, he is commonly well again, and very hungry. He adds, that having some of the Liquor presented him, he found the Taste to be offensive enough, and not unlike that of _Vitriol_, which by the Taste and emetick Operation, was guessed to be it’s principal Ingredient. The Relators assured our Author they had been in _England_, as well as elsewhere partly Eye Witnesses, and partly Performers of wonderful Cures by the help of it alone, under God, in the _King’s Evil_; insomuch, that an eminent Gentleman of this Nation, hath been cured by it, when _that Distemper_ had brought his Arm to such a pass, that the