Author: Bonatti, Guido, 13th cent Short Title: Decem tractatus astronomiae (1491) Title: Guido Bonatus de Forlinio decem continens tractatus astronomie. Imprint: Augsburg: Erhard Ratdolt, septimo kal' Aprilis 1491. Comments and Notes: Imprint from colophon. Signatures: pi14 a-z8 A-2E8; leaves B4, 2B3, and 2B4 missigned G4, BG3, and BG4 respectively. Leaf a2: In no[m]i[n]e d[omi]ni amen. Incipit liber introductorius ad iudicia stellarum ... editus a guidone bonato de forliuio. Colophon, leaf 2E7 verso: Liber astronomicus ... explicit feliciter. Magistri Johannis angeli ... correctione. Erhardiq; Ratdolt ... mira imprimendi arte: qua ... Auguste vindelicorum excellit nominatissimus. Septimo kal' Aprilis.M.cccc.lxxxxj. Printer's device in red and black on recto of final leaf. Preliminary gathering, p. [1]-[28], and final leaf with printer's device wanting. Written in ink on t.p.: Conventui S. Petri Salisburgi. Rubricated throughout. Bookplate of St. Peter's Benedictine Monastery in Salzburg. Smithsonian Call Number: BF1680 .B69 1491 ISTC Goff Hain-Copinger GW Proctor Polain UKBYIB00845000-B B-0845