MS 137 is a volume on Latin grammar. It contains the first sixteen books on the topic by 6th-century author, Priscian of Caesarea. Priscian's work contains eighteen books, based on earlier works by Herodian and Apollonius. Early medieval scholars in the eighth and ninth centuries produced abridgements of Priscian's original eighteen books. Many manuscripts of these abridgments exists, and they characteristically contain only the first sixteen books of Priscian's original text. This medieval version of Prisician's work on grammar, such as MS 137, is sometimes referred to as the Priscianus Major.

Prologue:contained on ff. 1r-v, and begins with the words Cum omnis eloquentie doctrinam, and ends with possit locus inveniri discretis.

Liber I, de voce: begins on f. 2r with the words Phylosophi diffiniunt vocem esse aerem tenuissimum, and ends with compellit per p, non per b, dicere et scribere on f. 11v.

Liber II, de Syllaba: begins on f. 12r with the words syllaba est comprehensio literarum, and ends on f. 21r, with de comparativo videamus.

Liber III, de comparitionis: begins on f. 21r with the words Comparativum est, quod cum positivi intellectu, and ends on f. 27v with the words hic betaceus, malvaceus.

Liber IV, de denominitivis: begins on f. 27v, with the words Denominativum appellatur a voce primitivi, and ends on f. 33v, with principium princeps, municipium municeps.

Liber V, de generibus: begins on f. 33v, with the words Quoniam de speciebus sive formis nominum, and ending on f. 44r, with video te lumine id est per lumen.

Liber VI, de nominativo et genetivo casv: begins on f. 44r with Breviter regulas tibi me iussisti iuliane consul, and ends on f. 58r with the words blanda, fallax, superba, impotens, discordis.

Liber VII, de ceteris casibus: starts on f. 58r, with Terminales sunt nominum literae apud latinos , and ends on f. 72v with eius deficiunt declinationis apud plerosque.

Liber VIII, de verbo: begins on f. 72v, with Verbum est pars orationis cum temporibus et modis, and ends on f. 89r with the words, similiter.......[Greek]

Liber IX, de generali verbi declinatione: starts on f. 89r, with the words Dictionum aliae sunt uniformes, and ends on f. 97r with supino convertens 'vi' in 'tum' ut 'nevi netum'

Liber X, de praeterito et perfecto: starts on f. 97v, with the words In 'io' a antecedente unum invenitur, and finishes on f. 106v, with the words quod usu quoque ut ostendimus confirmatur.

Liber XI, de participio begins on f. 107r with Qui tertio loco participium posuerunt, and ends on f. 113r with 'caligantes' pro 'caligatas' duxit.

Liber XII, de pronomine: starts on f. 113r with Pronomen est pars orationis, quae pro nomine, and ends on f. 118r with Dicimus enim 'suus illius' et 'suus illorum'.

Liber XIII, de casibus: begins on f. 118r with Casus quoque accidit pronominibus, and ending on f. 123r with et 'nemo' carent vocativo.

Liber XIV, de praepositione: begins with Quoniam de omnibus, ut potui, declinabilibus supra disserui on f. 123r, and ends on f. 130v with cum de ea disserebamus accipi supra docuimus.

Liber XV, de adverbio: begins on f. 131r, with Adverbium est pars orationis indeclinabilis, and ends on f. 136v with ut 'papae, euax, ei, heu, euhoe, ohe' et similia.

Liber XVI, de coniunctione: starts on f. 136v, with Conivnctio est pars orationis indeclinabilis, and ends on f. 139r with nec lucidus ethra siderea polus.

The script is good, a small minuscule with many contractions.

The rubrics are partly in rustic capitals. Book initials are for the most part red, either plain or with a little scroll work. The initial of the Prologue is blue, red, and green. Small capitals are black touched with green.