Having the words _Leabhar Giollacholaim Meigleathadh_ on the last page of the MS., it is supposed that it belonged to Malcolm Bethune, a member of a family distinguished for their learning and medical skill, that supplied for many ages with physicians the Western Isles of Scotland. It was one of them, Fergus Mac Beth or Beaton, that signed the holograph, of the famous Islay Charter of 1408 for Donald, Lord of the Isles. A MS. dated 1238 on the cover is supposed to have been written at Glenmason, in Cowal. It contains tales in prose and verse—one about _Deardri_, _Dearduil_, or _Darthula_. Another valuable and interesting MS., dated 1512-26, belonging to Sir James Macgregor, Dean of Lismore—“Jacobus M’Gregor decanus Lismorensis”—has been mostly published. The editors who have done their work admirably, have been Dr Thomas MacLauchlan and Dr W. F. Skene. The work of the former was very difficult and laborious—first to change the orthography of the Dean, which was phonetic, into modern Gaelic, and then give a literal English translation. Among other known manuscripts of the period is that of Dunstaffnage, October 12, 1603, by Ewen Macphaill. It contains prose tales concerning Lochlin and Finnic heroes. A paper manuscript 1654-5, by Edmond MacLauchlan, contains sonnets, odes, epistles, and an ogham alphabet at the end. A quarto paper manuscript of 1690-91 contains ancient and modern tales and poems. It was written at Ardchonnail, on Lochawe side, by Ewen Maclean for Colin Campbell—“_Caillain Caimpbel leis an leis an leabharan_.” This Gaelic inscription appears on the seventy-ninth leaf of the manuscript.