The manuscript is a
codex (precursor to the modern
book format), containing a near complete text of the four Gospels on 198 parchment leaves (sized ), with one missing section: John 19:17-35. The text is written in one column per page, 17-28 lines per page, in large
semi-uncial letters using brown and black ink. The Latin text is written above the Greek (as in
Codex Boernerianus (G)), and in
minuscule letters. Each word (in both the Greek and Latin lines) is separated by a middot (·). No breathing or accent marks are utilised. Many initial letters are decorated using mixtures of red, yellow, purple, or bluish-green ink. It is decorated, but the decorations were made by an inartistic hand. The manuscript from which Sangallensis was copied (known as its
Vorlage/exemplar) was likely written stichometrically. Quotations from the
Old Testament are indicated. The text is divided according to the
Ammonian Sections, whose numbers are given in the margin, with references to the
Eusebian Canons (both early systems of dividing the four Gospels into different sections) in Roman letters written below the Ammonian Section numbers. The top of the pages contain the chapter titles (known as /
titloi). It contains Prologues, the
Epistle of Jerome to Pope Damasus I (a letter outlining Jerome's Latin translation of the Gospels), the Eusebian Canon Tables, and the tables of contents (known as /
kephalaia) before each gospel in both Greek and Latin. Brief subscriptions are written after each gospel. Jerome's Preface to Matthew is also included before the first Gospel. The text of was originally omitted but inserted by a later hand, and is omitted without being added later. The
Pericope Adulterae (John 7:53-8:11) is omitted, but a blank space was left for the remainder of the 348th page. The texts of and are included without any indications of spuriousness, but is marked by asterisks to express doubt as to its inclusion. == Text ==