So well satisfied are two of the most enlightened and efficient Christian denominations in Great Britain--the Congregationalists and the Scottish Free Church--of the need of more extensive acquaintance with the natural sciences in ministers of the gospel, that they have attached a professorship of natural history to their theological seminaries. That in the New College in Edinburgh is filled by the venerable Dr. Fleming; that in the New College in London by Dr. Lankester. From a syllabus of Dr. Fleming's course of lectures, which he put into my hands last summer, I perceive that it differs little from the instruction in natural science in the colleges of our country. This being the case, it strikes me that this is not exactly the professorship that is needed in the theological seminaries of our country. But they do need, it seems to me, professorships of natural theology, to be filled by men who are practically familiar with the natural sciences. If any such chairs exist in these seminaries, I do not know it. They are amply provided with instruction in the metaphysics of theology, hermeneutics, and ecclesiastical history; and I should be sorry to see these departments less amply provided for. But here is the wide field of natural theology, large enough for several professorships, which finds no place, save a nook in the chair of dogmatics. This might have answered well enough when the battle-field with scepticism lay in the region of metaphysics, or history, or biblical interpretation. But the enemy have, within a few years past, intrenched themselves within the dominions of natural science; and there, for a long time to come, must be the tug of the war. And since they have substituted skeletons, and trees, and stones, as weapons, in the place of abstractions, so must Christians do, if they would not be defeated. Let me refer to a few examples to show how inadequately furnished the minister must be for such a contest, who has used only the means of instruction provided in our existing seminaries, literary and theological. Take the leading points discussed in the following lectures. How can a man who has heard only a brief and hurried course of thirty lectures on chemistry, twenty on anatomy and physiology, fifteen upon zoology, ten upon botany, ten upon mineralogy, and twenty upon geology, at the college, with no additional instruction at the theological seminary,--how can he judge correctly of points and reasoning difficult to be mastered by adepts in these sciences? How certain to be worsted in an argument with an accomplished naturalist who is a sceptic! Suppose the sceptic takes the ground advocated by Oken and the author of the "Vestiges." Let the clergyman, whom I have supposed, read the works of Miller and Sedgwick in reply to the development hypothesis, and see whether he can even understand their arguments without a more careful study of the sciences on which they rest.