Many ingenious persons--nay many excellent poets, have in modern times attempted to imitate the ancient Scottish ballad, but in no single case has there been a perfect fac-simile produced. The reason of the failure is obvious. An ingenious person, who is not a poet, could not for the dear life of him construct a ditty which, in order to resemble its original, must embody a strain of music, and a burst of heroic or of plaintive passion. It is not, however, by any means so difficult to imitate the diction: of which we have a notable example in the ballad of "Childe Ether," which is included in several of the collections. "Childe Alcohol," perhaps, would have been the better name, if all the circumstances which we have heard relating to its composition be true; nevertheless it is undeniable that our facetious friends who are chargeable with this literary sin, have succeeded in producing a very passable imitation, and that their phraseology at least is faultless. A poet, again, neither can nor ought to imitate, and when he is writing in earnest the attempt is absolutely hopeless. For every poet has his own style, and his own unmistakeable manner of thought and of expression, which he cannot cast off at will. If he imitates, he ceases for the time to be a poet, degenerates into a rhymster, and his flowers upon close inspection will be found to have been fabricated from muslin. Very blind indeed must be the man who could mistake "Sir James the Rose" for an ancient Scottish ballad. Michael Bruce, the author, was more than an ingenious person: he was also a poet, and had he lived a little longer, and at a period when simplicity in composition was rated at its true value, he would in all probability have executed something better. But he wanted power, and that pathos which is indispensable for the composition of a perfect ballad. Even Scott, when he attempted too close an imitation, failed. The glorious fragment which we have already quoted, "The Eve of Saint John," "Lochinvar," and others, are not to be considered in the light of imitations, but as pure outbursts of his own high chivalrous and romantic imagination. But the third part of "Thomas the Rhymer" is an adaptation to, or continuation of the ancient fragment, with which, however, in no respect can it possibly compare. Indeed the old ballad stands almost isolated in poetry, for its wild imaginative strain. "She's mounted on her milk-white steed, She's ta'en true Thomas up behind; And aye, whene'er her bridle rung, The steed flew swifter than the wind. O they rade on, and further on; The steed gaed swifter than the wind, Until they reached a desart wide, And every land was left behind. "Light down, light down, now, true Thomas, And lean your head upon my knee, Abide and rest a little space, And I will show you ferlies three.