[Sidenote: Vide _Ætius Tetrab._ 4. Ser. 4. _Cap._ 44.] By the Account we receive from Authors we cannot be positively assured, whether there was any particular established Method in the first Ages of this Art, for the Performance of this Operation: This we are only assured of that there are some Circumstances which relate to it, that have been taken Notice of; the most considerable of which is, that the actual Cautery was to be applied immediately after the Abscision; this they advised, not only to put a Stop to the Flux of Blood, but likewise to correct the ill Quality of it: It is to be observed, that they ordered always, upon such an Occasion, Defensatives to be applied to the contiguous Parts, to prevent their being inflamed; but for as much as they were sensible the actual Cautery would procure an Eschar, they recommended the Use of Digestives to separate it; after which, they proposed to heal it as [Sidenote: Vide _Arceus_, lib. 2. Cap 3. de _Curand. Vulnerib._] a common Ulcer. The very next Advance this Operation received, that we have met with, was by that Accurate Writer _Franciscus Arceus_, who obliged the World with an exact and methodical Account of the whole Method of Procedure in extirpating a _Cancer_ in the Breast; though this Author would only venture on those that were not Ulcerated, those that were he looked upon as incurable. We do not find that this Method was recommended to the World by any remarkable Histories of Cures effected by it; whether it proceeded from the Unsuccessfulness of the Attempts, or its Disuse, we cannot determine. _Fabritius Hildanus_ likewise made a considerable Step towards the Encouraging the Performing this Operation; and he assures us, he has more than once done it with Success; he did not only influence his Cotemporaries to revive an Operation, that was, perhaps, almost grown out of Date, by the Histories of some Cases he recites; but obliged them with the Figure of a Pair of Forceps, which in this Operation are very convenient to engage the Breast, and thereby prevent the Pain the Patients are sometimes put to, by piercing the Breast with Needles armed with Silk to suspend it. There are several Ways of performing the Operation, mentioned by later Practitioners, but at this Time there are few that are willing to be concerned in it. A very considerable Author speaking of extirpating a _Cancerous Breast_, advises us to take care we do not cut the Pectoral Muscle in the Operation: But we have seen a very remarkable Case of this Nature, where a Part of that Muscle was cut away, and the Cartilages of the two of the Ribs laid bare, and the Patient happened to be cured. Now if our Predecessors had so great a Respect to the avoiding the wounding of this Part, as to make their Incisions too superficial, their Operations must be in all Probability unsuccessful; for we are very well assured by Experience, that their actual Cauteries will have