A parchment manuscript, quarto size, consisting of thirteen leaves, without cover. The manuscript appears to have been written in the late fifteenth or early sixteenth century. The hand is very good and regular. There is no ornamentation of the script, except that upper case characters are accentuated with red on all but the last four leaves. The writing is in two columns, and largely contracted.

The text is an imperfect copty of the Tract on Materia Medica. There is nothing to indicate author, translator, or scribe. The copy is complete at the commencement, but defective at the end. Several leaves are also missing in a small number of different places. Thus after a continuous text of two leaves, containing the articles "Aron barba" to "Agnus Castus", there is a break of two leaves. Our third leaf gives the concluding part of the article on "Aurifrigmentum", and ends with that on "Auena". Then comes another gap of probably three leaves, the next article being "Camolea quinquefolium", with a continuous text to "Caprifolium mater silua"(e). Then follows a further gap of approximately three leaves, the text now resuming with the concluding part of the article on "Fraxinus". The ramining article in 'F,' and the first five articles in 'G' to "Gariofilus" to follow. Thereafter comes another break of two or three leaves. The manuscript now begins with the last four lines of the article on "Licrisia", and goes on with eight leaves of continuous text, ending abruptly with "Jarapigra Galieni", i.e. within an article of two of the end of the Tract.

Source of description: Mackinnon, Donald (1912). A descriptive catalogue of Gaelic manuscripts in the Advocates' library, Edinburgh, and elsewhere in Scotland, appendix III, section I, no. 1, p. 313.