The manuscripts were sent to Ewen MacLachlan by the Highland Society of Scotland in 1812.

Dated passim. MacLachlan generally called the volume ‘An Leabhar Caol’, but on the title pages added as alternatives ‘An Diabhol Caol’, ‘The Celtic Repository’. Binding inscribed ‘Ancient Celtic Tales’, ‘The Tales of Other Times’.

The contents (text) as follows.

(i) Contents list. (Page ii.)

(ii) Note on 8th-century learning. (Page iii.)

(iii) Oigheadh Gcoinchuloind (Adv.MS.72.1.38, pages 7-69). (Page 1.)

(iv) ‘Ar-amach Mhic Con’ (i.e. Cath Mhuighe Mucruimhe, Adv.MS.72.1.38, pages 71-114). (Page 45.)

(v) Notes. (Page 80.)

(vi) Oileamhuin Gconchuloind, (Adv.MS.72.1.38, pages 117-142). (Page 81.)

(vii) Oigheadh Chloinne Lir (Adv.MS.72.1.38, pages 150-170). (Page 106.)

(viii) ‘Clann Uisnich’ (Adv.MS.72.2.6, pages 432-459). Notes, pages 148, 256-257. (Page 119.)

(ix) ‘Foill Mhic Colgain air Fionn’, i.e. Bruighean Chaorthuinn. (Text to page 133, line 5 apparently from Adv.MS. 72.2.8, pages 243-244; remainder from Adv.MS.72.1.38, pages 176-192). (Page 132.)

(x) An Cath Catharrdha from Adv.MS.72.1.46. Ewen MacLachlan’s arrangement of the text is correct, and corresponds to Adv.MS.72.1.46 (as at present bound) as follows. Page 149, line 4: folio 2. Page 150, line 33: folio 1. (MacLachlan omits the portion published in Henry Mackenzie, ‘Report of the Committee … appointed to inquire into the … Poems of Ossian’ , Appendix, pages 305-306). Page 151, line 26: folio 5. Page 152, line 48: folio 6. Page 154, line 28: folio 7. Page 155, line 47: folio 3. Page 157, line 25: folio 8. (Page 149.)

(xi) Four extracts from Foras Feasa Ar Éirinn, Adv.MS.72.2.8. Page 159: Adv.MS.72.2.8, pages 57, lines 18-62.4. Page 161, line 29: Adv.MS.72.2.8, pages 81, line 6-82, line 2. Page 162, line 12: Adv.MS.72.2.8, pages 137, line 9-138, line 6. Page 162, line 41: Adv.MS.72.2.8, pages 162, line 2-163, line 15. (Page 159.)

(xii) “Leabhar Ghlinne-Màsain”. Adv.MS.72.2.3, column 9, line 23 - end. Beginning of column 9 added at page 257. Note, page 163. (Page 164.)

(xiii) “Leabhar Bian an Fheidh”. Adv.MS.72.1.40, pages 2, line 5-11, line 23, ‘Bas nan Laoch Eirionnach’. Page 233: Adv.MS.72.1.40, pages 49-67, ‘Baothrem Uladh go Teamhair Luachra’ (i.e. Mesca Ulad). (Page 224.)

(xiv) ‘Leabhar Chaluim Mhic-Bheatha’. Adv.MS.72.1.33, (a) folio iv. Page 250, line 10: Adv.MS.72.1.33, (b) pages 6, line 7-7, line 15. (Page 249.)

(xv) “Leabhar Chille Brìde”, i.e. Adv.MS.72.1.32, now lost. (Column numbers refer to the original). Column 1, quarrel between Finn and Oisín, beginning “Ui Fint uao Baoiscne a cui[n]ch[eadh] a m[hi]c eth[on] ois[ín]”. Page 251, line 45: on how Nuadu Argatlam received his silver hand, beginning ‘Im for uoth atesclime do cloint dian cecht atir na bFint’. Page 252, line 46: column 2, list of seven celebrated gifts (?) beginning ‘Ingen Oilill do niath noi faithche feimi[n]e .i. nua gein annsint’. Page 253: Aithed Émere Le Tuir nGlestg Mac Ríg Lochlainne. Beginning “Dian deachaidh Cuchul[ainn] do Airne for ènuiph ith trachaue baili mhuuain”. Page 253, line 29: colophon. Page 253, line 33: column 3 Faillsigud Tána Bó Cuailnge. Beginning ‘Ceathartha connagur in cach ealathuin is cuinc[est]a don tsairsisi na tana. [Ingliston MS. A.vi.1 contains a fuller and more careful transcript, executed by MacLachlan in 1814. This extends the text to column 16, where it ends abruptly, thus including Recension I of Táin Bó Cuailgne as far as the words ‘aspeart cathb[ad] oclaoch no geab[ad] ugaisc[ed] uforbiadh a ainmb’ (cf. Windisch, “Táin bó Cúailgne nach der Handschrift Egerton 1792”, page 135, line 3)]. (Page 251, line 6.)

(xvi) Monthly instructions on food, drink and bleeding (Adv.MS.72.1.33, (a) folios 2 recto-7 verso). ‘Miosachan’. (Page 255.)

(xvii) From Oigheadh gCoinchuloind (Adv.MS.72.1.45, folios 2 verso, column b, line 41-3 recto, column b, line 9). (Page 258, line 10.)

(xviii) A ‘materia medica’ article on wine (Adv.MS.72.1.3, folios 76, line 20-77, line 7). (Page 259, line 27.)