Ministers of the gospel may be divided into two classes. There is the warm, enthusiastic, emotional evangelist, who flashes across the ecclesiastical horizon like a meteor, and creates a temporary "sensation," so to speak, among the dry bones in the valley of vision. Then there is the more steady-going preacher of the Word, who maintains an even pace throughout, turning neither to the right nor to the left--whose _forte_ is to conserve the truth, and keep it alive where it has once been found. In the latter category we may include Dr. Buchanan. He is not by any means a brilliant preacher, in the ordinary acceptation of the term. He does not draw the multitude about him. He is no Boanerges of the Temple; but he is a giant as regards a firm grasp of doctrinal truth. He never evolves new shapes or fantastic theories, "won from the vague and formless infinite;" but he "proves all things," and "holds fast that which is good." If he is not an essentially popular preacher--and this is a merit which even his most partial admirers would scarcely venture to claim for him--he is edifying and didactic, and few ministers are better qualified to build up and consolidate a church. Rather too stereotyped (if we may hint such a fault) in his tendencies, he is yet deeply skilled in the form of sound doctrine, and his style is terse, vigorous, and polished. There is, perhaps, what not a few would be disposed to term a want of animation in his pulpit utterances. Habitually grave and dignified, he seldom indulges in anything like an ebullition of fancy or of mirth. His sentences are cut, polished, and beautified like a piece of Parian marble. People are so much accustomed now-a-days to hear orators whose hearts (like Coriolanus) are upon their lips, that they have little sympathy with scholarly and erudite prelections, pure and simple, come from whatsoever quarter they may. But it does not therefore follow that calm, dispassionate, logical reasoning, of which Dr. Buchanan is both a master and exponent, is without its merits and admirers. On the contrary, it is impossible to sit under the minister of the Free College Church without being "built up" in all the Christian graces. He is an uncompromising foe to the Scarlet Lady, to the materialistic tendencies of the present day, to looseness and infidelity, of every kind, in religious matters; and some would perhaps object that his sermons are too strongly impregnated with the Confession of Faith, the Deed of Demission, and the Shorter Catechism. But he is on this account all the more entitled to rank as a living embodiment of the principles and practice of the Free Church of Scotland; and when questions on which a little margin of difference may be allowed are brought under consideration, Dr. Buchanan will be found to be tolerant and even liberal in his views. With a presence so commanding and dignified as to be almost leonine, a deep, melodious voice, and a head of snowy whiteness, Dr. Buchanan's appearance, as he