Here bigynneþ þe tretise of repercussiuis //
Repercussiuis bifalliþ for hoot apostymes, & principal whanne it bigynneþ in a noble lyme: as in þe herte, ouþir in þe brayn, ouþir in þe heed, ouþir in þe lyuere, þe splen & þe stomac, reynes, ballokis, & in þe bladdre // It schal alwei be þin entencioun for to putte awei greuous mater fro a noble lyme into anoþer place. ¶ Whanne þou wolt worche wiþ repercussiuis, þou muste take hede to .x. condiciouns þat ben sett in þe iij. tretis in þe general chapitre of enpostyms / ¶ Repercussif is seid in .ij. maners: as large & streit [large & streit. See p. 305, note 1.] / large is seid: as eueri medicyne maad of coold herbis for to aquenche hoot [folio 242b] causis. Streit is seid, whanne it putt awei þe mater & is not swiþe coold // Of repercussiuis þere ben manie degrees of cooldnes / Ther ben summe so coold, þat a man mai not fele his lyme, & þan it is clepid stupefactiua [Vigon transl. Traheron Interpr.: "Stupefactyve. That, that hathe strengthe to astonie, and take awaye felynge."] / & þis þou schalt vse whanne þer is þing þat greueþ more þan þe mater. ¶ Whanne þou ne dredist not hoot qualite oonli, but þou dredist þe mater, þan þou schalt vse medicyns þat ben coold & drie, þat þei mowe tempere þe complexioun of þe lyme, & wiþ þe vertu of stiptica þei wolen comforte þe lyme, [Lat.: et sua stipticitate uirtutem membri confortent.] & þese ben propirli clepid repercussiuis / Whanne þou hast entencioun oonly for to make