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JOHANNES DE SACRO BOSCO (fl. c.1230-1240). Sphaera mundi. - GERARDUS DE SABLONETA (fl. mid-13th century). Theorica planetarum. Venice: Franciscus Renner, de Heilbronn, 1478.
Chancery 4 (189 x 140mm). Collation: a-b8 c-d6 e-f10 (a1 preface, Sphaera mundi, d6v blank, e1r Theorica planetarum, f10v colophon, verses by Franciscus Niger). 48 leaves. 25 lines, shoulder notes. Type: 5:109bR (text), 6:65G (diagram text). Incipits to each work PRINTED IN RED. 11 diagrams, 2 hand-coloured in red/ochre, woodcut white-on-black initials. (First leaf lightly damaged and repaired, affecting a few letters, first two bifolia strengthened at hinge, neat tear in a8 repaired, lower section of f10 replaced, affecting a few letters.) Early flexible vellum, title written along spine (recased).
FIRST ILLUSTRATED EDITION of these important works on medieval astronomy. Where the earlier four editions had left blank spaces for the scientific diagrams, Renner had a set of woodcuts made, some of which were then lightly coloured by hand. Both the Sacrobosco and Gerardus texts attempt to explain the theoretical workings of the universe and were standard university texts; this is their third publication as a pair. HC *14108; BMC V, 195 (IA. 19869); Klebs 874.6; IGI 5340; Goff J-402.
Chancery 4 (189 x 140mm). Collation: a-b
FIRST ILLUSTRATED EDITION of these important works on medieval astronomy. Where the earlier four editions had left blank spaces for the scientific diagrams, Renner had a set of woodcuts made, some of which were then lightly coloured by hand. Both the Sacrobosco and Gerardus texts attempt to explain the theoretical workings of the universe and were standard university texts; this is their third publication as a pair. HC *14108; BMC V, 195 (IA. 19869); Klebs 874.6; IGI 5340; Goff J-402.