In approaching the close of our subject, we shall introduce a few lectures having a wider range, and deriving less elucidation from geology than from other sciences. One is a consideration of the physical effects of human actions upon the universe. And in conclusion of the whole subject, we shall endeavor to show that the bearings of all science, when rightly understood, are eminently favorable to religion, both in this world and the next. With a few miscellaneous inferences from the principles advanced, I shall close this lecture. In the first place, we see that the points of connection between geology and religion are numerous and important. A few years since, geology, instead of being appealed to for the illustration of religious truth, was regarded with great jealousy, as a repository of views favorable to infidelity, and even to atheism. But if the summary which I have exhibited of its religious relations be correct, from what other science can we obtain so many illustrations of natural and revealed religion? Distinguished Christian writers are beginning to gather fruit in this new field, and the clusters already presented us by such men as Dr. Chalmers, Dr. Pye Smith, Dr. Buckland, Dr. Harris, and Dr. King, are an earnest of an abundant harvest. I hazard the prediction that the time is not far distant when it will be said of this, as of another noble science, "The undevout _geologist_ is mad." Secondly. I would bespeak the candid attention of those sceptical minds, that are ever ready to imagine discrepancies between science and religion, to the views which I am about to present. The number of such is indeed comparatively small; yet there are still some prepared to seize upon every new scientific fact, before it is fully developed, that can be made to assume the appearance of opposition to religion. It is strange that they should not ere this time despair of making any serious impression upon the citadel of Christianity. For of all the numerous assaults of this kind that have been made, not one has destroyed even an outpost of religion. Just so soon as the subject was fully understood, every one of them has been abandoned; and even the most violent unbeliever never thinks, at the present day, of arraying them against the Bible. One needs no prophetic inspiration to be confident that every geological objection to Christianity, which perhaps now and then an unbeliever of limited knowledge still employs, will pass into the same limbo of forgetfulness.