![FIRMINUS DE BELLAVALLE (fl.1345). Opusculum repertorii prognosticon in mutationes aeris. - HIPPOCRATES (attributed to). Libellus de medicorum astrologia. Translated by Petrus de Abano (c.1250-c.1318). Venice: Erhard Ratdolt, [before 4 November], 1485.](https://www.christies.com/img/LotImages/2002/CKS/2002_CKS_06605_0080_000(045101).jpg?w=1)
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FIRMINUS DE BELLAVALLE (fl.1345). Opusculum repertorii prognosticon in mutationes aeris. - HIPPOCRATES (attributed to). Libellus de medicorum astrologia. Translated by Petrus de Abano (c.1250-c.1318). Venice: Erhard Ratdolt, [before 4 November], 1485.
Super-chancery 4° (201 x 150mm). Collation: a-e8 f10 (a1 blank, a2r text, f6v Hippocrates incipit, f10r colophon, f10v blank). 50 leaves. 38 lines, printed foliation in headline. Type: 9:130G, 4:76G. Woodcut white-on-black and lombard initials, a few initial spaces. (Tiny marginal wormhole in first quire, occasional small spot.) ?18th-century calf with blind fillet around sides, gilt edges (rubbed).
FIRST EDITION of both works; the pseudo-Hippocrates text had appeared earlier in a different translation. Firmin de Beauval was famous in his own day as an astrologer and was instrumental in proposing calendar reforms under Clement VI in the 1340s. The present work treats of astrology, meteorology, and other celestial phenomena. The conjunction of Saturn, Jupiter and Mercury which he (and others) predicted for 1345 was retrospectively thought to have caused, through changes in the air, an outbreak of the plague in 1348. HCR 13393; BMC V, 291 (IA. 20544-5); GW 9983; Klebs 406.1; IGI 8082; Stillwell, Awakening, 753; Goff P-1006.
Super-chancery 4° (201 x 150mm). Collation: a-e8 f10 (a1 blank, a2r text, f6v Hippocrates incipit, f10r colophon, f10v blank). 50 leaves. 38 lines, printed foliation in headline. Type: 9:130G, 4:76G. Woodcut white-on-black and lombard initials, a few initial spaces. (Tiny marginal wormhole in first quire, occasional small spot.) ?18th-century calf with blind fillet around sides, gilt edges (rubbed).
FIRST EDITION of both works; the pseudo-Hippocrates text had appeared earlier in a different translation. Firmin de Beauval was famous in his own day as an astrologer and was instrumental in proposing calendar reforms under Clement VI in the 1340s. The present work treats of astrology, meteorology, and other celestial phenomena. The conjunction of Saturn, Jupiter and Mercury which he (and others) predicted for 1345 was retrospectively thought to have caused, through changes in the air, an outbreak of the plague in 1348. HCR 13393; BMC V, 291 (IA. 20544-5); GW 9983; Klebs 406.1; IGI 8082; Stillwell, Awakening, 753; Goff P-1006.
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