Ptolemaeus Arabus et Latinus

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Work B.5

Dixerunt Ptolemeus et Hermes quod locus Lune...

A brief text on the rectification of nativities based on the idea that the position of the ascendant at the time of birth is identical with the position of the Moon at the time of conception, i.e. the so-called ‘Trutina Hermetis’. This chapter is one of the two additional chapters (with B.4) often found together with Abuiafar Hamet filii Joseph’s Commentary on the Centiloquium in Plato of Tivoli’s translation (C.3.1.1) and in the ‘Mundanorum’ version (C.3.1.3), either at the beginning or at the end. It is related to v. 51 of the Centiloquium, which deals with the rectification of nativities, but its origin and exact relationship to the Centiloquium remain to be investigated. ‘Abraam Bendeur’ (or ‘Isbendeut’ among other spellings), quoted in the last paragraph, is perhaps Abraham Ibn Ezra (Sela). Dixerunt Ptholomeus et Hermes quod locus Lune… was commented upon by John Holbroke (C.4.8) and is part of commentaries C.3.5, C.3.9 (see MS Cracow, BJ, 1857, p. 128) and C.3.10.

Note 1

In several manuscripts, the text appears as a marginal gloss to v. 51 (Avignon, BM, 1022 (341); Cambridge, UL, Kk 4.7 (2022); Vatican, BAV, Reg. lat. 1692) or as a chapter inserted into the body of the text after v. 51 (Dijon, BM, 1045 (116); Ghent, UB, 5 (416); Paris, BnF, lat. 16204).

Note 2

For further uses of this text, see MSS Erfurt, UFB, Amplon. Q. 363, f. 92rb, and Paris, BnF, n.a.l. 1893, f. 125rb.


‘(Paris, BnF, lat. 7307) Dixerunt Ptholomeus et Hermes quod locus Lune in hora que infunditur sperma est gradus ascendentis nativitatis, et in loco qui erat gradus ascendentis in hora infusionis spermatis erit Luna in nativitate — et cum eo remanserit equa Lunam et ubi inveneris erit ascendens nativitatis. Dixit magister Abraamis Bendeur: Gradus infusionis spermatis non erit ex toto Lune locus in nativitate vel ipse erit oppositus. Et similiter erit de ascendente nati, id est non erit locus Lune in spermatis infusione vel ipse erit aut ei oppositus ex hoc expertus fuit multotiens.’


F. J. Carmody, Arabic Astronomical and Astrological Sciences in Latin Translation. A Critical Bibliography, Berkeley-Los Angeles, 1956, 16-17 (no. 3d); L. Thorndike, ‘Notes upon Some Medieval Latin Astronomical, Astrological and Mathematical Manuscripts at the Vatican’, Isis 47 (1956), 391-404: 394-397; L. Thorndike, ‘Notes on Some Astronomical, Astrological and Mathematical Manuscripts of the Bibliothèque Nationale, Paris’, Journal of the Warburg and Courtauld Institutes 20 (1957), 112-172: 128-129; R. Lemay, ‘Origin and Success of the Kitāb Thamara of Abū Jaʿfar Aḥmad ibn Yūsuf ibn Ibrāhīm from the Tenth to the Seventeenth Century in the World of Islam and the Latin West’, in Proceedings of the First International Symposium for the History of Arabic Science (Aleppo, April 5-12, 1976), Aleppo, 1978, II, 91-107: 102; R. Lemay, Abū Maʿšar al-Balḫī [Albumasar]: Liber introductorii maioris ad scientiam judiciorum astrorum, Napoli, 1995-1996, IV, 144; R. Lemay, Le Kitāb aṯ-Ṯamara (Liber fructus, Centiloquium) d’Abū Jaʿfar Aḥmad ibn Yūsuf [Ps.-Ptolémée], 1999 [unpublished], I, 421-423; J.-P. Boudet, ‘Naissance et conception: autour de la proposition 51 du Centiloquium attribué à Ptolémée’, in De l’homme, de la nature et du monde. Mélanges d’histoire des sciences médiévales offerts à Danielle Jacquart, Genève, 2019, 165-178: 173-177; S. Sela, ‘Calculating Birth: Abraham Ibn Ezra’s Role in the Creation and Diffusion of the Trutina Hermetis’, in Pregnancy and Childbirth in the Premodern World. European and Middle Eastern Cultures, from Late Antiquity to the Renaissance, eds C. Gislon Dopfel, A. Foscati, C. Burnett, Turnhout, 2019, 79-106: 94-95.

Modern ed.

Thorndike, ‘Notes on Some Astronomical’, 129 (from MS Paris, BnF, lat. 7307); Boudet, 174-175 (from four MSS).


Avignon, BM, 1022 (341), s. XV, f. 216v

Berlin, SBPK, Hamilton 557, s. XIII-XIV, f. 15r

Brno, MZK, A 64, s. XV, f. 103v-104r

Brussels, BR, 18678-18781, s. XIV, f. 1vb

Cambridge, UL, Kk 4.7 (2022), s. XIV, f. 128ra-128rb

Cracow, BJ, 618, s. XIV, f. 64va-64vb

Cracow, BJ, 1859, s. XV, f. 205r-205v

Darmstadt, HLHB, 739, s. XIV, f. 182ra-182rb

Dijon, BM, 1045 (116), s. XV, f. 133r

Dublin, TC, 397, s. XV, f. 39v-40r

Dublin, TC, 399, s. XV, f. 160rb-160vb

Erfurt, UFB, Amplon. F. 379, s. XIV, f. 99rb

Erfurt, UFB, Amplon. F. 380, s. XIV, f. 140v

Erfurt, UFB, Amplon. Q. 376, s. XIV, f. 105va-105vb

Erfurt, UFB, Amplon. Q. 377, s. XIV, f. 50v

Florence, BML, Ashburnham 1733, s. XIII, f. 72vb-73rb

Florence, BNC, Magliabech. XX.22, s. XIV, f. 1ra-1rb

Florence, BR, 163, s. XIII, f. 26vImages|Text

Florence, BR, 885, s. XIII-XIV, f. 350v

Ghent, UB, 5 (416), s. XV, f. 12r

Leiden, UB, Voss. lat. O.3, s. XV, f. 169r-169v

Leipzig, UB, 1491, s. XV, f. 100r

London, BL, Additional 10775, s. XVI, f. 70r-71r

London, BL, Arundel 88, s. XV-XVI, f. 55r

London, BL, Arundel 268, s. XIV, f. 40rb-40va

London, BL, Royal 12.E.XV, s. XIII-XIV, f. 133v-135r

London, BL, Sloane 312, s. XV, f. 38v-39r

London, BL, Sloane 332, s. XV, f. 19v

London, BL, Sloane 702, s. XV, f. 10r

London, BL, Sloane 2030, s. XIII, f. 20v-21r

London, UC, lat. 16, s. XV, f. 3ra-3rb

Madrid, BN, 10015 (olim Toledo 98-17), s. XIII, f. 19va

Melk, SB, 601 (olim 51), s. XV, f. 293r

Munich, BSB, Clm 228, s. XIV, f. 93v

Oxford, BL, Canon. Misc. 554, s. XV, f. 196r-196v

Oxford, BL, Digby 228, s. XIV, f. 12va

Oxford, CCC, 101, s. XV, f. 190va-191ra

Paris, BnF, lat. 7307, s. XIII, f. 1r

Paris, BnF, lat. 7316, s. XV, f. 145r-145v

Paris, BnF, lat. 7413, s. XIII, f. II/30rb-30vb

Paris, BnF, lat. 7443, s. XV, f. 138v-139r

Paris, BnF, lat. 16204, s. XIII, pp. 569b-570a

Salamanca, BU, 189, s. XIV, f. 21ra-21rb

Salamanca, BU, 2051, s. XIII, f. 26ra

Seville, BCC, 7-7-30, s. XV, f. 144v-145r

Vatican, BAV, Reg. lat. 1692, s. XIII-XIV, f. 280v

Vatican, BAV, Vat. lat. 1112, s. XIV, f. 46ra

Vatican, BAV, Vat. lat. 3096, s. XIV, f. 160r-160v

Vatican, BAV, Vat. lat. 6766, s. XIII, f. 60ra

Vatican, BAV, Vat. lat. 7616, s. XIII, f. 45va-45vb

Venice, BNM, Fondo antico lat. Z. 344 (1878), s. XIII, f. 155ra-155rb

Venice, BNM, lat. VIII.16 (3382), s. XV, f. 104va

Verona, BC, CCXLIV (215), s. XIII, f. 16rb-16va

Vicenza, BCB, 208 (132), s. XV, f. 213r-214r

Vienna, ÖNB, 2388, s. XIII-XIV, f. 22v

Vienna, ÖNB, 3105, s. XV, f. 37ra-37rb

Vienna, ÖNB, 5209, s. XVI, f. 72v-74v

Vienna, ÖNB, 5239, s. XIV, f. 128ra-128rb

Vienna, ÖNB, 5251, s. XV, f. 211v

Vienna, ÖNB, 5414, s. XV, f. 136vb-137rb

Warsaw, BN, Rps 12634 II, s. XV, f. 19v-20r

Wolfenbüttel, HAB, 65 Aug. 2º (2637), s. XV, f. 229v