Iohannis de Sacrobusto, Anglici, uiri clarissimi, Sphaera mundi. Feliciter incipit. [Gerardi Cremonensis, uiri clarissimi, Theorica planetaru[m] feliciter incipit] / [Joannes de Sacro Bosco].

Sphaera mundi. Latin

Spera mundi

Impressa Venetijs : Per Franciscu[m Renner de Hailbrun], [1478]

96 unnumbered pages : diagrams (woodcuts) ; (4to)

The Theorica planetarum is usually considered to be by the Cremona astrologer Gherardo da Sabbioneta, although some authorities ascribe it to the Gerardus Cremonensis who died 1187. Cf. Dict. of scientific biog., suppl., p. 189 for a summary of the evidence

Both works were first printed in 1472. Cf. The awakening interest in science during the first cent. of printing / Margaret Bingham Stillwell. no. 63, 70

Imprint from colophon

Signatures: a-b⁸ c-d⁶ e-f*10

Titles from p. [1], [57] (incipits, printed in red)

Copy 1 Note: Issued with Gerardus Cremonensis: Theorica planetarum.

Goff J-402

BM 15th cent. V, p. 195 (IA.19869)

Poynter 514

Klebs 874.6

St J361

Hain-Copinger 14108