I desire to take this opportunity of acknowledging valuable aid derivedfrom the recent works on Scottish History by Mr. Hume Brown and Mr.Andrew Lang, from Mr. E.W. Robertson's Scotland under her Early Kings,and from Mr. Oman's Art of War. Personal acknowledgments are due toProfessor Davidson of Aberdeen, to Mr. H. Fisher, Fellow of New College,and to Mr. J.T.T. Brown, of Glasgow, who was good enough to aid me inthe search for references to the Highlanders in Scottish mediævalliterature, and to give me the benefit of his great knowledge of thissubject.