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Arithmetical and astronomical pieces, Made up of seven pieces written in the late 12th and 13th century in France (?)

MS. Selden Supra 26
Held at the Weston Library

  • Request

Arithmetical and astronomical pieces:

  1. First half of 13th cent., (fol. 5). The latter part of a treatise on Arithmetic: a section beg. 'Cum minor quantitas aliquociens sumpta maiorem componit': ends 'Scio igitur quod ternarius est numerus quesitus', with an arithmetical note added.
  2. 13th cent.: in French (fol. 13). An arithmetic in French verse: beg. 'Li dui clerc qui ont translate | Compot en roumans sunt hastes | De plusors que achen amete(te)nt | Et en roumans argorisme metent'; ends 'Verras le nombre si te haite | Et se adroit taraiz astraite. Explicit.'
  3. Middle of 13th cent., (fol. 17). A treatise on arithmetic: pref. beg. 'Si quis in quatuor matheseos disciplinis': text beg. 'Vnitas est origo'. On fol. 23r is a French recipe for treating the eyes, and on fol. 23v a calendarial cycle from 1255 to 1284, with French notes.
  4. Late 12th cent., (fol. 24). 'Sompnium Scipionis Marci Tullii Sciceronis (sic), excerptum ex libro vi to de Re puplica', with the 'Expositio Macrobii', with diagrams, etc. Two distinctive capitals are on fols. 24, 75.
  5. Late 12th cent., (fol. 96). 'Liber Alguorismorum', beg. 'Omnis numerus naturali': part of it is 'Exceptiones de libro qui dicitur Geblamucabala [Algebra]', fol. 99v.
  6. Early 13th cent., (fol. 101). Part of a treatise on the planet Saturn: beg., some leaves being lost, 'quanta fiunt differentia partis & cursus mediati', ends '& ad euidentiam directionem quandam sub. traximus'.
  7. Late 12th cent., (fol. 106v). 'Liber de practica Aritmetice', on fractions and roots: beg. 'De minuendi scientia. Si autem uolueris minuere fractiones ': cf. fol. 12v.
  8. Fol. 122. A treatise on the composition of astronomical tables: beg. 'Tabulas compositurus hoc ordine procedes'.
  9. Fols. 4, 130 are parts of leaves from a 10th cent. Sacramentary written at St. Omer (see fol. 130r).
  10. 'Liber Willelmi de Clara quem portauit ad sanctum Augustinum', about A.D. 1300, with list of contents. 'Liber Sancti Augustini Cantuarie . Liber W . de Clare' early 14th cent., with list of contents: 'D[istinctio] xi Gra[dus] viii', altered to' D. xiii, Gra. iii'.


  • Creation: Made up of seven pieces written in the late 12th and 13th century in France (?)


133 Leaves

Language of Materials

  • Latin
  • French


MS. Selden Supra 26


Old Selden mark = 26

Other Finding Aids

Falconer Madan, et al., A summary catalogue of western manuscripts in the Bodleian Library at Oxford which have not hitherto been catalogued in the Quarto series (7 vols. in 8 [vol. II in 2 parts], Oxford, 1895-1953; reprinted, with corrections in vols. I and VII, Munich, 1980), vol. II, no. 3414

Custodial History

Manuscript 3428 acquired by the Bodleian Library

Physical Facet

On parchment


8 1/4 × 5 5/8 in.

Repository Details

Part of the Bodleian Libraries Repository

Weston Library
Broad Street
Oxford OX1 3BG United Kingdom