Skull, and the Pericranium; from whence these pains proceeded: and separated from the bone, the Insertions of those Muscles which are called Splenij, and Recti, and serve to extend the head. The Patient being received into the Hospital of Ʋlme, desired the Chy∣turgions help: wherefore, after Generals, and a slender Diet, I cut the outward Skin with an Incision-Knife, in the shape of a Tri∣angle, down to the Bone, taking care, lest the Fibres of the foresaid Muscles should be cut in pieces; and hereby making a passage for the included mater to flow out, I found the bone rough, and corroded with the matter: which being evacuated, I filled up the lips of the Wound with an Astringent Medicine well down; and the next day scraped the rough bone all about with the Scraping-Irons: this O∣peration being performed, I sprinkled the Cephalick Pouder upon the Skull, and applyed a Digestive to the Wound; till that within two days time the Skull was covered over with solid Flesh: the Bone being covered, I Incarnated the Wound with Betony Oyntment, and Cicatrized it with the Certaum Divinum. Twenty days after the scraping, the Skull threw off some Skales, and the pain of the Head returned: but pulling out the little bones, with the Pincers, the pain presently ceased. Hereby young Chyrurgions are to be admo∣nished; if the Contusions of the head suppurated, yield not to dis∣solving Medicines, so long time applyed, they are not to continue the use of them: but rather, without any delay, or fear of danger, to cut open, in due manner, the Coverings of the Skull; lest the Quit∣ter continuing a long while, under a very thick Coat, become Ma∣lignant, and Corrode the Skull, and Pericranium: See Tab. XXXII. a Contusion of the Head, without hurting the Skin or Skull.