Manuscript produced in Scotland containing extracts from Scottish chronicles, primarily drawing upon the works of Fordun and Bower, but also including independent entries.

The main text is the work of one scribe, and written in a cursive script with 22 lines to a page. Additions and insertions are in another hand of the 16th century.

The manuscript has been dated to the end of the 15th century by the folio catalogue, which was probably compiled by Cosmo Innes. Borland suggests that the manuscript was produced in the early 16th century. The same dating is proposed by Turnbull, who notes that the scribe must have been alive during the reign of James IV because of a statement on folio 266r: 'Sicut, proch dolor! Scriptoris tempore, Rex Jacobus Quartus prout in bello, de Floudene dicetur'. This reference to the battle of Flodden in 1513 certainly dates the manuscript to sometime thereafter. Turnbull further suggests that the work is possibly in the hand of Alexander Myln, Abbot of Cambuskenneth, who was responsible for producing the Lives of the Bishops of Dunkeld. Drexler also supports the suggestion that Myln was a possible scribe, and on the evidence of the above inscription she dates the manuscript to sometime fairly soon after 1513. Tod, on the other hand, proposes that the inscription implies that the scribe was alive during the reign of James V, which would still date the production of the manuscript to the early 16th century.

The narrative of the main text runs to the year 1460, followed by an account of the legitimation of the children of Robert II, and a genealogy of the kings of Scots from Malcolm Canmore to explain the respective claims of Bruce and Baliol. The scribe generally employs the chronology of Bower, but also inserts information from various sources, such as stories about William Wallace. There are indepdendent entries about Scone, and several entries about the bishops of Dunkeld including passages which are identifical to Myln's 'The Lives of the Bishops of Dunkeld'.

There are many additions, interpolations and annotations dated up to the year 1575 in various hands. Some of the marginal notes and extra leaves contain entries drawn from various historical works, including the histories of John Major and Hector Boece, published in 1521 and 1527, respectively. Turnbull suggests that some of these additions are possibly in the hand of Sir William Sinclair, 14th Baron of Rosslyn.

The contents are as follows:

Folio 1r is blank.

Later annotations and ownership inscriptions. Folios 1v-2r.

Folios 2v-5r are blank.

Later annotations. Folio 5v.

Scribal alphabetical index. Folios 6r-39v.

Extracts from various chronicles, beginning: 'Incipiunt aliqua de Cronicis Scocie, et libro scoticronicon vulgo nuncupato, notate et extracta pro quo[rum] faciliori intellectu aliqua venit terre habitabilis prenotanda divisio'. Folios 40r to 361v.

Later additions. Folios 361v-369r.

The manuscript is decorated with large red initials throughout. Smaller initials are stroked with red. Line fillers, paraphs and underlining are also in red. Towards the end of the volume spaces are occasionally left for decoration.

Each folio has been drypoint-ruled recto and verso.

A scribal foliation runs 'I-CCLXXXVIII' in the upper margin in the form of Roman numerals. This does not begin until folio 40 of the modern foliation and ends on folio 353. On folio 354 commences a 16th-century foliation in Arabic numerals, running '289-297', ending on folio 362. The older foliation has since been superseded by modern library foliation, to which all references refer.

Alphabetical quire signatures are consistently present in the lower margin in the form of letters and Roman numerals.