No, it is sufficient to have the Univocal Signs to make a Crucial Incision in the place of the Wound, and to lay bare the Bone, in order to observe the Fracture, which sometimes is so fine, that the Operator is oblig'd to make use of Ink, which insinuates it self into the Cleft, and of a particular Instrument, with which the black Line that hath penetrated to the bottom, cannot be rubb'd out; whereas it may be easily defac'd when the Fracture is only superficial. _How long time is commonly spent before the appearing of the Accidents?_ In the Summer Season they appear in three or four Days, and at the latest in seven; in Winter {195} they are slower, and sometimes do not happen till the fourteenth Day: But at the end of this term, it may be affirm'd that the Trepan is often unprofitable. _What is requisite to be done in a doubtful Occasion; Must the Trepan be apply'd or omitted?_ The Surgeon is to have recourse to his own conscientious Discretion, which ought to serve as a Guide, and requires that we should always act according to the known Rules of Art; insomuch that after having well consider'd the Accidents, with all the Circumstances of the Wound, if there be no good grounds for the undertaking of the Operation, it is expedient to desist, and in this case to have deference to the Advice of other able Surgeons of the same Society, rather than to rely too much upon his own Judgment, to the end that he may be always secure from all manner of Blame. _Is the Trepan apply'd upon the Fracture?_ No; but on one side of it, and always in a firm place. _What Course is to be taken when a Fracture is found in a Suture?_ A double Trepan is to be made, and apply'd on each side of the Suture, by reason of the overflowing of the Blood, which may happen therein. _What Method ought to be observ'd in the curing of the Wounds of the Head, and Fractures of the Skull?_ In simple Wounds of the Head, it is necessary only to make use of Balsams, and to lay over 'em _Emplastrum de Betonica_. When there is a Contusion either in the {196} _Pericranium_, or in the Skull, the Wound must be kept open till after the Suppuration or Exfoliation. When there is only a Bunch without any Wound or Accident, it must speedily be dissolv'd with Plaister or Mortar, Chimney-Soot, Oil of Olives, and Wine, laid upon the Part between two Linnen-Rags; or else with Soot, Spirit of Wine, and Oil of St. _John_'s-Wort, wherein the Bolsters are soakt, to be in like manner apply'd with a Band. Wounds of the Head accompany'd with a Fracture, absolutely require the application of the Trepan, wherein it is requisite to make use of Oil of Turpentine to be dropt upon the Membrane of the Brain; or else Spirit of Wine mingled with Oil of Almonds, and not with the Oil or Syrrup of Roses; and to endeavour to cause a plentiful outward Suppuration.