PUBLICIUS, Jacobus (fl. 1462-70). Ars Oratoria. Ars Epistolandi. Ars Memorativa. Venice: Erhard Ratdolt, 31st January 1485.

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PUBLICIUS, Jacobus (fl. 1462-70). Ars Oratoria. Ars Epistolandi. Ars Memorativa. Venice: Erhard Ratdolt, 31st January 1485.

Chancery 4° (210 x 150 mm.). Collation: A-D8 E8 (2.7 disjunct, one or the other presumably a cancel) F-G8 H10 (A1 blank, A2r Ars Oratoria incipit: Si quis: id operis diligens examinator inspiciat, E6r Ars Epistolandi incipit: Non me fugit, G3v Ars Memorativa incipit: Haud ab re fore arbitror, H10v colophon: Erhardus Ratdolt augustensis ingenio miro & arte perpolita impressioni mirifice dedit. 1485. pridie calendas februarii. Venetiis). 66 leaves. Types 8:91R (text), 6:56(75)G and 10:65G (diagram inscriptions), 91Gk (alphabet on H4r). 32 lines. One woodcut tree diagram in Oratory, 50 woodcuts in the mnemonic treatise including a coastal-town view (from Rolewinck's Fasciculus Temporum), a diagram of the Ptolemaic system, male and female figures, 41 roundels of a white-on-black pictorial alphabet, mnemonic diagram with movable snake-pointer, CHESS DIAGRAM OF THE STARTING POSITION, 2 tree diagrams, and a white-on-black mnemonic device incorporating 25 animals. Numerous white-on-black floral initials. (Worming slightly affecting text, light stain at the end). Contemporary leather-backed wooden boards, brass clasps, (binding wormed, repair to spine, presumably a remboîtage, later endpapers). Provenance: contemporary marginalia.

Ratdolt's second edition of the three surviving works by a Florentine writer, who lectured at Leipzig, Erfurt and Basel. The 1482 first-edition text was considerably revised, six cuts were added and one was removed. In the third work practice in chess is recommended as sharpening the memory. IN VERY FEW COPIES HAS THE VOLVELLE ON H8. SURVIVED INTACT. HC *13546; BMC V, 289 (IA. 20541); Goff P-1097; IGI 8192; Klebs 816.2; Essling 293; Sander 5983; van der Linde appendix p. 150.

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