PAL

Jordanus

London, British Museum, Royal 12 C XVII

Short title Mathematical and astronomical treatises and tables
Contents The first collection has a table of contents at the end (143b), the other at 145b.
Century 14 in.
Precise date (artt. 17-21) c. 1330-1340
Place of origin (artt. 1-16) England (?); (artt. 17-21) France
Language Latin
Previous owners Belonged to Theyer. Theyer sale-cat. # 310.
Composite ms. Two collections bound together.
Material Membr.
Height × width 9 3/4 x 7 in.
No. of leaves 218
Gatherings (artt. 1-16) 1-11^8 12^6 13-8^8 19^1 20^2; (artt. 17-21) 1-5^8 6^18 7^8 8^6. Sec. fol. (excluding tables) 'et duo numeri'.
Initials etc. Small illuminated border-initials with grotesques in both parts.
Printed catalogs Casley, D., A catalogue of the manuscripts of the King's Library (1734) 204. | Not in CMA. | Warner, George F. & Gilson, J.P., Catalogue of Western Manuscripts in the Old Royal and King's Collections II (1921) 31-2.
Source Folkerts | Warner & Gilson II (1921)
Type of source cat. | pvt. notes
Source’s source insp.
Additional copies The first collection has much in common with the Oxford MS. Ashmole 1522 (see Black's Catalogue).
Work 1Author standard Petrus Dacus
Title (ms.) Calendar
Contents With astronomical information and explanatory introduction.
Incipit (explanation) In hoc primacionum ciclo 4 linee descendentes
Additional remarks Petrus Dacus seems to be an earlier namesake of Petrus de Dacia who was rector of Paris University in 1326 (see Langebek, Scriptores Rerum Danicarum 6, 260, Denifle and Chatelain, Chartularium Univ. Paris. 2, 301). The saints in the calendar are not very distinctive, but are not inconsistent with a French Dominican origin.
Item no. 1
Folio no. 1-
Rubric Kalendarium Petri
Work 2Author standard Gerlandus
Title (ms.) Perpetual calendar for Easter, &c., for the great cycle 1044-1575
Incipit (explanation) Quere inter numeros in superiori capite tabule
Additional remarks Perhaps by Gerlandus, scholasticus of Besançon circ. 1141-1148; but the authors of this name have not been certainly discriminated.
Item no. 2
Folio no. 7b-
Additional copies Cf. Harley 3647, f.2b.
Work 3Author standard Petrus Dacus
Title (ms.) Tabula de loco lune inueniendo in quolibet die anni a media nocte sui incepto
Item no. 3
Folio no. 8b-
Additional copies A table found also in GOxfB Ashmole 360, 1522 (see Black's Catalogue).
Work 4Author standard Johannes de Sacrobosco
Title (ms.) Treatise on Arithmetic
Incipit Omnia que a primeua rerum origine
Printed copies Printed without place or date (1490 ?), &c., and in Halliwell, Rara Mathematica (1841).
Item no. 4
Folio no. 9-
Rubric Incipit algorismus
Work 5Author standard Johannes de Sacrobosco
Title (ms.) Tractatus de sphera
Incipit Tractatum de spera quattuor capitulis distinguimus
Item no. 5
Folio no. 16b-
Rubric Tractatus de sp(h)era mag. Iohannis de Sacro Bosco
Math. drawings With coloured diagrams.
Additional copies The common treatise on spherical astronomy, cf. Royal 8 A. XVIII, art. 4.
Work 6Author standard Johannes de Sacrobosco
Scribe(s) The verses quoted are written in a very large hand.
Title (ms.) Compotus
Incipit Compotus est scientia considerans tempora
Item no. 6
Folio no. 32b-
Rubric Compotus mag. Iohannis de Sacro Bosco
Math. drawings Coloured diagrams.
Additional copies Cf. 12 C. IX, art.1)
Work 7Author standard Johannes de Monte Pessulano
Title (ms.) Tractatus quadrantis veteris
Incipit Geometrie due sunt partes theorica et practica
Printed catalogs Glorieux, P., La faculté des arts et ses maitres au XIIIe siècle (1971) 226. Singer, D.W., Hand-list of scientific mss. in the British Isles dating from before the sixteenth century # 157 & 212; cf. Transactions of the Bibliographical Society 15 (1917-9) 185-99.
Item no. 7
Folio no. 61-
Rubric Tractatus quadrantis veteris secundum mag. Iohannem in Monte Pessulano
Math. drawings Coloured diagrams.
Additional copies Cf. Royal C. IX, art. 6.
T & K TK 585
Additional information Thorndike, L., Who wrote Qudrans vetus ?, Isis 37 (1947) 152.
Work 8Title (ms.) Tables
Contents Tables (a) of the sun's place in the ninth sphere, daily for the intercalary period of four years, and (b) of the sun's declination 'secundum Albategni'.
Item no. 8
Folio no. 69, 71
Work 9Author standard Profatius Judaeus
Title (ms.) Tractatus quadrantis noui
Incipit Cum stellarum sciencia sine instrumentis
Precise date 1288/1301
Method of Dating d
Additional remarks The second recension of this tract, the work of the Jew Jacob ben Makir, of Marseilles and Montpellier, called Profatius Judaeus (see Hist. Litt. de la France, XXVII, p. 611).
Item no. 9
Folio no. 71b-
Rubric Tractatus quadrantis noui compositus a mag. Profacio Hebreo anno dom. incarn. 1288, et correctus ab eodem anno dom. 1301
Additional copies Other copies are in Harley 80, Arundel 268.
Work 10Title (ms.) Composicio quadrantis
Incipit Quadrans e.k.l. constans ex quarta parte circuli
Item no. 10
Folio no. 81-
Rubric Incipit composicio quadrantis
Tables Preceded by tables relating to the instrument.
Math. drawings Preceded by two coloured diagrams.
T & K TK 1155
Work 11Title (ms.) A treatise on vulgar and sexagesimal fractions
Incipit Minuciarum vulgarium scribes superius numeratorem
Printed catalogs Glorieux, P., La faculté des arts et ses maitres au XIIIe siècle (1971) 236. Singer, D.W., Hand-list of scientific mss. in the British Isles dating from before the sixteenth century # 214; cf. Transactions of the Bibliographical Society 15 (1917-9) 185-99.
Item no. 11
Folio no. 83-
Rubric Tractatus de minuciis philosophicis
Explicit in predictis tamen sunt vtiles.
Colophon Explicit algorismus de minuciis philosophicis.
Additional copies Attributed in Harley 3735 (59) to 'magister Ricardus Anglicus'.
T & K TK 875
Work 12Title (ms.) On the astronomical instrument called Torquetum
Incipit De omnibus parcium (sic, so also in Ashnole MS.) instrumenti quod turketum dicitur
Item no. 12
Folio no. 88b-
Rubric Tractatus de turketo
Math. drawings Coloured diagrams.
Additional copies Another copy is in GOxfB Ashmole 1522 (see Black's Cat.).
Work 13Title (ms.) On the astronomical cylinder
Incipit Inuestigantibus chilindri disposicionem, qui dicitur horologium uiatorum, sumendum est lignum
Item no. 13
Folio no. 91b-
Rubric Tractatus chilindri
Explicit per vmbram scies altitudinem cuiuslibet rei erecte. Et sic terminatur tractatus
Math. drawings Coloured diagrams.
Additional copies Other copies are in Royal 12 E. XXV, art 15, Arundel 292, f.105, Egerton 843, f.27, and in the GOxfB Ashmole MS.
Work 14Author standard Messahala
Title (ms.) Compositio astrolabii, Practica astrolabii (2 parts.)
Incipit (pt. 1) Cum ergo volueris facere astrolabium
Incipit 2 (pt. 2; 110) Nomina instrumentorum sunt hec: primum est armilla
Item no. 14
Folio no. 95-
Rubric Astrolabium Messehallach
Prolog Scito quod astrolabium est nomen Grecum
Math. drawings Coloured diagrams.
Additional copies Cf. Royal C. IX, art.13.
Work 15Author standard Gerardus Cremonensis
Title (ms.) Theorica planetarum
Incipit Circulus e(c)centricus uel egresse cuspidis uel egredientis centri dicitur qui non habet centrum suum cum mundo
Item no. 15
Folio no. 118-
Rubric Theorica planetarum
Math. drawings Coloured diagrams.
Additional copies Cf. 12 C. IX, art.15.
Work 16Author standard Johannes de Harlebeke
Title (ms.) Tractatus de spera solida (2 parts)
Incipit (pt.1) Cum igitur fauente domino volueris hoc instrumentum componere facies primo pilam
Printed copies Printed (with the omission of the preface and of ch. 13 of pt. 2) in the Venice compilation called Spherae Tractatus (1518, 1531). In the latter ed. it is assigned to Campanus of Novara.
Item no. 16
Folio no. 127b-
Rubric In nomine domini (&c.) incipit tractatus de spera solida siue de astrolabio sperico compositus anno somini 1303
Prolog Totius astrologice speculacionis radix
Colophon Explicit spera volubilis
Math. drawings Coloured diagrams.
Additional information See Arundel 268, f.67, and a MS. at Cambrai, no. 821.
Work 17Additional names Gaufridus Fare
Title (ms.) Calendar
Contents A calendar and compilation of tables of the motions of the sun and moon with canons for their use. For the year 1321 and for the meridian of Paris.
Incipit (can.) Patefit ex Ptholomei disciplinis in libro suo
Additional remarks Gaufridus (Fare), Abbot of Bec-Hellouin in Normandy (by a compatriot and neighbour in 1321).
Item no. 17
Folio no. 146-
Rubric Patefit (so styled in the contemporary table of contents)
Colophon Hiis actis sisto, sit laus et gloria Christo. | Hoc opus exegi, summo sit gracia regi. Explicit Kalendarius Beccensis.
Glosses etc. After the colophon (210) follow some additional canons probably by the same author, beg. 'Dato ascendente domos 12 adequante', with colophon 'Explicit addiciones Kalendarii Beccensis dyocesis Rothomagensis. A further insertion in the same hand is a table of the places of the planets (1340-1369) at 190.
Work 18Title (ms.) An astrological tract (inc.)
Incipit Quoniam electiones laudabiles sunt salubres
Item no. 18
Folio no. 212b
Rubric Electiones laudabiles (so table of contents)
Work 19Title (ms.) Sermo de regulis compotistarum (aceph.)
Incipit ... doctrina non video
Item no. 19
Folio no. 213-
Explicit inuenire facile est studenti.
Colophon Sermo de regulis compotistarum
Tables With two tables.
Work 20Author standard Johannes de Ianua
Title (ms.) Canones eclipsium
Incipit Ad sciendum eclipsium solis primo quere coniunccionem
Additional remarks Possibly the author was the physician of Clement VI.
Item no. 20
Folio no. 214-
Rubric Incipiunt canones eclipsium mag. Iohannis de Ianua, tam de sole quam de luna de vera coniunctione
Explicit ad presens supersedeo. Laus deo et beate Marie. amen.
Colophon Expliciunt canones eclipsis, quas mag. Ioh. de Ianua compilauit, extrahendo eos partim a canonibus communibus, partim ab albategni, partim a minori almagesti, partim a mag. Ioh. de Scicilia in scripto suo super tabulas Toletanas, et specialiter quantum ad puncta (?) eclipsis minuta casus ac etiam minuta more. Anno 1332 incompleto, 22^a die Ianuarii.
Additional copies Another copy is in GOxfB Digby 97, 125-.
Work 21Author standard Johannes Danck de Saxonia
Title (ms.) Note on the use of the Alphonsine tables
Incipit Et si luna non fuerit in parte superiori
Item no. 21
Folio no. 217-
Rubric Ad habendam diuersitatem aspectus lune pro situ in epiciclo Iohannes (Danck) de Saxonia dicit sic
Colophon Explicit, expliceat, ludere scriptor eat
Glosses etc. At the end are a few additional notes.