Ptolemaeus Arabus et Latinus

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Work C.3.18

Michael Ruszoczky (?)
Commentary on the Centiloquium

A commentary on Centiloquium v. 57-97 interspersed with a commentary on Quadripartitum II.5-8. This commentary is found in the personal notebook of Michael Ruszoczky, copied during the years 1492-1493 (1493 for the present text), when he was student at the University of Cracow. The same Michael Ruszoczky lectured on philosophy and geometry at the same university between 1496 and 1505 (see W. Wisłocki, Liber diligentiarum facultatis artisticae Universitatis Cracoviensis, I: 1487-1563, Kraków, 1886, 32-33, 42, 46, 49, 52, 54-55, 67, 68, 70). The commentary on the Quadripartitum occurs between v. 96 and 97 and consists of four chapters on eclipses (II.5-8) preceded by an introduction (f. 174r-175r: ‘Advertendum ergo est quod in prenosticatione eclipsis…’). Ptolemy’s original texts are not included, but several phrases show that the source texts were Plato of Tivoli’s translation for the Centiloquium (C.3.1.1) and Egidius de Tebaldis’s translation for the Quadripartitum (C.2.2).

Text ‘(Cracow, BJ, 2703) Verbum Ptolomei LVII est de medelis unde dum voluerit medicus… (174r) Advertendum ergo est quod in prenosticatione eclipsis quomodo (?) iuxta viam Ptolomei principaliter sunt investiganda. Primum est determinare in qua provincia vel civitate accident ille actus… Capitulum in quibus terris et provinciis continget efectus eclipsium. Iuxta intentionem Ptolomei efectus eclipsium trans… (?) in civitate concordante cum signo in quo est eclipsis — tales apparebunt.’

Bibl. G. Rosińska, Scientific Writings and Astronomical Tables in Cracow. A Census of Manuscript Sources (xivth-xvith Centuries), Wrocław-Warszawa, 1984, nos 111 and 2349; M. Markowski, Astronomica et astrologica Cracoviensia ante annum 1550, Firenze, 1990, 31.

Modern ed. ---