The final conclusions at which we arrive, then, are, first, that death is a fixed and universal law of nature, essential to the existence of the present system of the world; and secondly, that, like all other laws of nature, it exhibits marks of benevolence, and wise adaptation on the part of the Author of nature. The question will indeed arise in every reflecting mind, why a Being of infinite power and wisdom could not have secured to his creatures the benefits resulting from a system of death, without the attendant suffering. But this question resolves itself into the inquiry, why evil exists at all; and although, in my own view, it exists most probably as a means of greater happiness to the universe, yet on this point the wisest minds have differed and been baffled, and equally perplexing is it to every form of religion. Hence it is no objection to any views we may adopt, that they leave this question where they found it. _The fifth and last step in our investigation of this subject is to show how science, experience, and revelation may be reconciled on the subject of death._ We have seen that geology is not alone in proving death to be a law of nature, essential to the present system of the world, and, indeed, indicative of divine wisdom and benevolence. For anatomy and physiology, as well as experience, teach us the same truths. And natural theology shows that, if death is a law of organic nature, it must have entered into the plan of the universe in the divine mind, and was not the result of any change of organic nature subsequent to the fall of man. Can these views be reconciled with the declarations of Scripture, which certainly represent death among the human family, if not among the lower animals, to be the consequence of sin? There are three suppositions by which all apparent discrepancy between science and revelation, on this subject, may be removed. I shall present them, with the arguments in their favor, leaving to others to decide which is most reasonable. For they are independent of one another, though not inconsistent; and, therefore, even though different persons should prefer different theories, they need not be regarded as in opposition to one another.