![SACROBOSCO, Johannes de (d. 1256 [1244?]). Sphaera mundi. - Georgius von PEURBACH (1423-1461). Theoricae novae planetarum. - Johannes REGIOMONTANUS (Johann MÜLLER of Knöigsberg, 1436-1476). Disputationes contra Cremonensia in planetarum theoricas deliramenta. [Venice:] Erhard Ratdolt, [before 4 November] 1485.](https://www.christies.com/img/LotImages/2002/NYR/2002_NYR_01083_0135_000(043417).jpg?w=1)
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SACROBOSCO, Johannes de (d. 1256 [1244?]). Sphaera mundi. - Georgius von PEURBACH (1423-1461). Theoricae novae planetarum. - Johannes REGIOMONTANUS (Johann MÜLLER of Knöigsberg, 1436-1476). Disputationes contra Cremonensia in planetarum theoricas deliramenta. [Venice:] Erhard Ratdolt, [before 4 November] 1485.
4o (197 x 140 mm). 58 leaves. 32 lines. Roman type: 8:91 (text), Gothic types: 4:76 (table on last page), 10:65 (inscriptions on earlier diagrams), 6:56 (inscriptions on frontispiece and later diagrams). Woodcut white-on-black floriated initials 2 and 5. Full-page woodcut of an astrolabe, 61 woodcut diagrams, seven printed in colors (olive, ochre, red and black, some of the red coloring apparently applied by hand). (Some worming at beginning, light staining, mostly marginal.) 19th-century sheep backed boards.
Second Ratdolt edition. Based on Ptolemy and his Arabic commentators, Sacrobosco's treatise was the fundamental astronomy text of the late middle ages, and was taught in all the schools of Europe until well into the 16th-century. Nearly half of the astronomical diagrams are new to this edition, the remainder being reprinted from the 1482 edition. BMC V, 290 (IA. 20546); Essling 259; Goff J-406; HC *14111; IGI 5344; Klebs 874.10; Redgrave 57; Sander 6662.
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Second Ratdolt edition. Based on Ptolemy and his Arabic commentators, Sacrobosco's treatise was the fundamental astronomy text of the late middle ages, and was taught in all the schools of Europe until well into the 16th-century. Nearly half of the astronomical diagrams are new to this edition, the remainder being reprinted from the 1482 edition. BMC V, 290 (IA. 20546); Essling 259; Goff J-406; HC *14111; IGI 5344; Klebs 874.10; Redgrave 57; Sander 6662.