A treatise on the astrolabeChaucer, Geoffrey, -1400[ca. 1450]enmManuscript, on parchment, in a single hand, of Chaucer's Treatise on the astrolabeIn Middle English.Layout: single columns, mostly of 28 lines.Script: English bookhand.Decoration: initials in blue with red penwork.Presentation inscription on verso of front flyleaf: Augustus W. Franks, the gift of Sir David Dundas.Ownership inscription on verso of front flyleaf: C. H. Read.Tipped in: autograph letter signed from D. D. to A. W. Franks, 1877 February 11.Binding: nineteenth-century full calf; in case.