This is a print on demand publication. Contents: (I) Introduction: Phlebotomy in the Middle Ages, The Latin Treatise, Late Medieval English Medicine & Middle English Medical Texts, & The Middle English Text: Related Tracts, Date & Dialect, Manuscript, (II) "Tractatus magistri enrici de egritudinibus fleubotomandis"/"Of Phlebotomie", (III) Appendixes: (A) "Of Blode Lytting" (from Gonville & Caius College MS. 84/166, pp. 205-06), (B) Summary of "Tactatus"/"Of Phlebotomie", (C) ProblemWords in the Middle English Texts, & (IV) Plates.