this part of the subject, however, I must pause a moment, in order to point out another mode, in which science may contribute to elucidate Scripture. In the way just described, it may enable the interpreter more correctly to understand the language, but it may also give a fuller illustration to the sentiments of the Bible. Revelation, for instance, represents God as benevolent. Now, if we can derive from the records of geology striking and hitherto unthought-of manifestations of this attribute, we shall make the doctrine of Scripture more impressive; or, if we appeal to the numerous changes which the earth has undergone, and the vast periods which they have occupied, we find that the unsearchableness of divine wisdom, and the vastness of the divine plans, are brought more vividly before the mind, and task its power of comprehension more than illustrations from any other quarter. In short, the principles of religion that derive important elucidation from science, and especially from geology, are very numerous, as I hope to show in subsequent lectures. But I now return to the inquiry, whether the principles of science, and especially of geology, are so well settled that we can employ them in this manner.

As to the more mathematical sciences, there will be no one to doubt but some of their principles must be admitted as infallible truth; for our minds are so constituted that they are incapable of resisting a fair presentation of mathematical demonstration. Now, there is scarcely any physical science that is not based more or less upon mathematical truth; and as to the facts in those sciences, some of them are so multiplied, and speak so uniformly the same language, that we doubt them no more than we do a mathematical demonstration. Other classes of facts are less decided; and in some cases they are so insulated as to be regarded as anomalies, to be set aside until better understood. The same grades of certainty exist in respect to inferences from the facts of science. Some theories are scarcely less doubtful than mathematics; others are as strong as probable reasoning can make them; and others are merely plausible. Hypotheses are still less to be trusted, though sometimes extremely probable.

Now, most of the physical sciences embrace facts, theories, and hypotheses, that range widely along the scale of probability, from decided demonstration to ingenious conjecture. It is easy, however, in general, to distinguish the demonstrated and the permanent from the conjectural and the fanciful; and when we bring the principles of any science into comparison with religion, it is chiefly the former that should be considered, although scientific hypothesis may sometimes be made to illustrate religious hypothesis. But, passing by all other sciences, it is my desire to present before you, on this occasion, the claims of geology, as having fundamental principles so well settled that they claim attention from the interpreter of the Bible. I ought, however, to remark, that there exists a strange jealousy of this science even among intelligent men; a suspicion that its votaries have jumped at strange and dangerous conclusions through the influence of hypothesis, and that in fact the whole science is little else but hypothesis, and that there is almost no agreement even among its ablest cultivators. It is indeed a comparatively recent science, and its remarkable developments have succeeded one another so rapidly, as to leave men in doubt whether it would not prove a dazzling meteor, instead of a steady and permanent luminary. When the men who are now in the full maturity of judgment and reason, (and whose favorable opinion I am, therefore, anxious above that of all others to secure,) when these were young, geology did not constitute a branch of finished education; and amid the pressure of the cares and duties of middle life, how few find the leisure, to say nothing of the disposition, carefully to investigate a new and extensive science! Even though younger men should be found standing forth as the advocates of geology, yet how natural for those more advanced to impute this to the ardor and love of novelty, characteristic of youth!

There is another difficulty, in relation to this subject, that embarrasses me. It is not even yet generally understood that geology is a branch of knowledge which requires long and careful study fully to understand; that a previous knowledge of many other sciences is indispensable in order to comprehend its reasonings; that its reasonings are in fact, for the most part, to be mastered only by long and patient consideration; and finally, and more especially, that they will appear inconclusive and feeble, unless a man has become somewhat familiar with specimens of rocks and fossils, and has examined strata as they lie in the earth. How very imperfect must be the most intelligent man’s knowledge of botany, who had never examined any plants; or of chemistry, who had not seen any of the simple substances, nor experiments upon them in the laboratory; or of crystallography, whose eyes had perhaps never rested upon a crystal. No less important is it that he, who would reason correctly about rocks and their organic contents, should have studied rocks. But upon such an amount of knowledge it is no disparagement to say we have no right to presume in all, even of publicly educated men. Before such a state of preparation can exist, it is necessary that practical geology, at least, should be introduced into our schools of every grade, as it might be with great success.

It ought to be mentioned, in this connection, that, within a few years past, geology has experienced several severe attacks of a peculiar character. Men of respectable ability, and decided friends of revelation, having got fully impressed with the belief that the views of geologists are hostile to the Bible, have set themselves to an examination of their writings, not so much with a view of understanding the subject, as of finding contradictions and untenable positions. The next step has been to write a book against geology, abounding, as we might expect from men of warm temperament, of such prejudices, and without a practical knowledge of geology, with striking misapprehensions of facts and opinions, with positive and dogmatic assertions, with severe personal insinuations, great ignorance of correct reasoning in geology, and the substitution of wild and extravagant hypotheses for geological theories.

Hence English literature has been prolific of such works as “A Comparative Estimate of the Mineral and Mosaic Geologies,” by Granville Penn; the “Geology of Scripture,” by Fairholme; “Scriptural Geology,” by Dr. Young; “Popular Geology subversive of Divine Revelation,” by Rev. Henry Cole; “Strictures on Geology and Astronomy,” by Rev. R. Wilson; “Scripture Evidences of Creation, and Geology, and Scripture Cosmogony,” by anonymous authors; and many other similar productions that might be named. The warm zeal displayed, and doubtless felt, by these writers for the Bible; their familiar reference to eminent geological authors, as if they understood them; the skill in philology, which they frequently exhibit; and the want of a wide-spread and accurate knowledge of geology in the community,—have given to these works a far more extensive circulation than those works have had, which view geology as illustrating and not opposing revelation. Foremost among these is the lectures of the venerable and learned Dr. John Pye Smith, late principal of the Homerton Divinity College, London, “On the Relations between the Holy Scriptures and some Parts of Geological Science.”[4] This work, the result of long and patient research,