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Geometrical treatises, Written in the 14th century

MS. Canon. Ital. 157
Held at the Weston Library

  • Request

Geometrical treatises:


  1. Fol. 1. '...Practica Geometrie magistri Roberti Anglici de Monte Pessulano': beg. 'Geometrie due sunt partes, scilicet theorica & practica.'
  2. Fol. 7. 'Tractatus de mensuris arearum': beg. 'Scias quod aree.'
  3. Fol. 9. '...Practica Geometrie': beg. 'Geometrie due sunt partes principales, theorica & practica.'

B: Fol. 17. '...Optima practica de mensuris': beg. 'Pertica per perticam.'.

C: Fol. 22. '...Sp[h]era Johannis de Sacro Bosco.'.

D: Fol. 36. '...Conputus manualis bonus et utilis', a treatise on the calendar: beg. 'Ad cognoscendum artem': at the end (fol. 39) are the lines 'Cisio Janus.'.

E: Fol. 40. '...Compotus', a similar treatise: beg. 'Ad habendam scientiam.'.

F: Fol. 50. '...Scientia Algorismi in fractionibus seu partibus integrorum': beg. 'Sicut in integris': with two calendarial pieces headed 'mocccolxxo' (fol. 62V).

G: Fol. 64. '...Breuis doctrina dictaminis a magistro Ventura de Pergamo [Bergamo ?] tradita', a rhetorical work: beg. 'Quoniam introducentis.'.


  1. Fol. 72. '...Yconomica Aristotelis': beg. '[E]conomica & pollitica differunt': a paraphrase (?) of Arist. Oecon. i. 1-4
  2. Fol. 76. '...Liber de demonibus Senece': beg. 'Omne peccatum accio uoluntaria est.'
  3. Fol. 78. '...Liber Senece de paupertate': beg. 'Honesta inquit Epycurus.'


  • Creation: Written in the 14th century


81 Leaves

Language of Materials

  • Latin


MS. Canon. Ital. 157

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. IV, no. 20209

Custodial History

'...[erased] dominus Petrus de Fossis' (16th cent.). The MS. which appears as no. 157 in the Catalogue of Canon. Ital. is now MS. Canon. Misc. 114.

Physical Facet

On parchment, partly in double columns


8 1/8 × 6 1/8 in.

Repository Details

Part of the Bodleian Libraries Repository

Weston Library
Broad Street
Oxford OX1 3BG United Kingdom