SIR,—In the last number of _The Gaedheal_, a Gaelic periodical which may be known to some of your readers, I inserted a translation from the German of an essay on the authenticity of Macpherson's Ossian, appended to a poetical translation of Fingal by Dr August Ebrard, Leipsic, 1868. My object in doing this was to give Highlanders ignorant of German, as most of them unhappily are, an opportunity of hearing what a learned German had to say on the character of the most famous, though in my opinion far from the best, book in their language. I did not in the slightest degree mean to indicate my own views as to this vexed question. I know too well the philological conditions on which the solution of such a question depends to hazard any opinion at all upon the subject in the present condition of my Celtic studies. I am happy, however, to find that one good result has followed from the publication of this translation—a translation which, by the way, only revised by me, but made by a young lady of great intellectual promise—viz., the receipt of a letter from the greatest living authority on the Ossianic question, I mean John Campbell of Islay, traveller, geologist, and good fellow of the first quality. This letter, which I enclose, the learned writer authorises me to print, with your permission, in your columns; and I feel convinced you have seldom had a more valuable literary communication.—I am, &c., JOHN S. BLACKIE. * * * * * Conan House, Dingwall, September, 1875.