Part 3

Before proceeding to 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, and emanating from a man of eminent piety as well as learning, affords a full refutation of all the works that have been named, and in the kindness and candor of its spirit exhibits a fine contrast to their intolerance and dogmatism. In the profound works of Dr. Harris, entitled "The Pre-Adamite Earth," and "Man Primeval," the connections of geology and revelation are briefly but ably treated, and also its connection with natural religion. Quite recently, a small and more popular work on this subject has been published by Rev. David King, LL. D., of Glasgow, well worthy of attention. "The Course of Creation," by Rev. John Anderson, D.D. of recent publication, displays much learning and candor. But the causes that have been mentioned have secured a much wider circulation for the class of works first named, than for the latter, among the religious community generally. The consequence is, that the public mind is possessed of many prejudices unfavorable to the religious bearings of geology, and unfavorable to an impartial examination of its claims.

Under these circumstances, all that I can do is to state definitely what I apprehend to be the established principles of the science that have a bearing upon religious truth, and refer my hearers to standard works on the subject for the proof that they are true. If any will not take the trouble to examine the proofs, I trust they will have candor and impartiality enough not to deny my positions.

The first important conclusion, to which every careful observer will come, is, that the rocks of all sorts, which compose the present crust of the globe, so far as it has been explored, at least to the depth of several miles, appear to have been the result of second causes; that is, they are now in a different state from that in which they were originally created.

It is indeed a favorite idea with some, that all the rocks and their contents were created just as we now meet them, in a moment of time; that the supposed remains of animals and plants, which many of them contain, and which occur in all states, from an animal or plant little changed, to a complete conversion into stone, were never real animals and plants, but only resemblances; and that the marks of fusion and of the wearing of water, exhibited by the rocks, are not to be taken as evidences that they have undergone such processes, but only that it has pleased God to give them that appearance and that in fact it was as easy for God to create them just as they now are as in any other form.

It is a presumption against such a supposition, that no men, who have carefully examined rocks and organic remains, are its advocates. Not that they doubt the power of God to produce such effects, but they deny the probability that He has exerted it in this manner; for throughout nature, wherever they have an opportunity to witness her operations, they find that when substances appear to have undergone changes, by means of secondary agencies, they have in fact undergone them; and, therefore, the whole analogy of nature goes to prove that the rocks have experienced great changes since their deposition. If rocks are an exception to the rest of nature,--that is, if they are the effect of miraculous agency,--there is no proof of it; and to admit it without proof is to destroy all grounds of analogical reasoning in natural operations; in other words, it is to remove the entire basis of reasoning in physical science. Every reasonable man, therefore, who has examined rocks, will admit that they have undergone important changes since their original formation.

In the second place, the same general laws appear to have always prevailed on the globe, and to have controlled the changes which have taken place upon and within it. We come to no spot, in the history of the rocks, in which a system different from that which now prevails appears to have existed. Great peculiarities in the structure of animals and plants do indeed occur, as well as changes on a scale of magnitude unknown at present; but this was only a wise adaptation to peculiar circumstances, and not an infringement of the general laws.

In the third place, the geological changes which the earth has undergone, and is now undergoing, appear to have been the result of the same agencies, viz., heat and water.

Fourthly. It is demonstrated that the present continents of the globe, with perhaps the exception of some of their highest mountains, have for a long period constituted the bottom of the ocean, and have been subsequently either elevated into their present position, or the waters have been drained off from their surface. This is probably the most important principle in geology; and though regarded with much scepticism by many, it is as satisfactorily proved as any principle of physical science not resting on mathematical demonstration.

Fifthly. The internal parts of the earth are found to possess a very high temperature; nor can it be doubted that at least oceans of melted matter exist beneath the crust, and perhaps even all the deep-seated interior is in a state of fusion.

Sixthly. The fossiliferous rocks, or such as contain animals and plants, are not less than six or seven miles in perpendicular thickness, and are composed of hundreds of alternating layers of different kinds, all of which appear to have been deposited, just as rocks are now forming, at the bottom of lakes and seas; and hence their deposition must have occupied an immense period of time. Even if we admit that this deposition went on in particular places much faster than at present, a variety of facts forbids the supposition that this was the general mode of their formation.

Seventhly. The remains of animals and plants found in the earth are not mingled confusedly together, but are found arranged, for the most part, in as much order as the drawers of a well-regulated cabinet. In general, they appear to have lived and died on or near the spots where they are now found; and as countless millions of these remains are often found piled together, so as to form almost entire mountains, the periods requisite for their formation must have been immensely long, as was taught in the preceding proposition.

Eighthly. Still further confirmation of the same important principle is found in the well-established fact, that there have been upon the globe, previous to the existing races, not less than five distinct periods of organized existence; that is, five great groups of animals and plants, so completely independent that no species whatever is found in more than one of them, have lived and successively passed away before the creation of the races that now occupy the surface. Other standard writers make the number of these periods of existence as many as twelve. Comparative anatomy testifies that so unlike in structure were these different groups, that they could not have coexisted in the same climate and other external circumstances.

Ninthly. In the earliest times in which animals and plants lived, the climate over the whole globe appears to have been as warm as, or even warmer than, it is now between the tropics. And the slow change from warmer to colder appears to have been the chief cause of the successive destruction of the different races; and new ones were created, better adapted to the altered condition of the globe; and yet each group seems to have occupied the globe through a period of great length, so that we have here another evidence of the vast cycles of duration that must have rolled away even since the earth became a habitable globe.

Tenthly. There is no small reason to suppose that the globe underwent numerous changes previous to the time when animals were placed upon it; that, in fact, the time was when the whole matter of the earth was in a melted state, and not improbably also even in a gaseous state. These points, indeed, are not as well established as the others that have been mentioned; but, if admitted, they give to the globe an incalculable antiquity.

Eleventhly. It appears that the present condition of the earth's crust and surface was of comparatively recent commencement; otherwise the steep flanks of mountains would have ceased to crumble down, and wide oceans would have been filled with alluvial deposits.

Twelfthly. Among the thirty thousand species of animals and plants found in the rocks,[5] very few living species have been detected; and even these few occur in the most recent rocks, while in the secondary group, not less than six miles thick, not a single species now on the globe has been discovered. Hence the present races did not exist till after those in the secondary rocks had died. No human remains have been found below those alluvial deposits which are now forming by rivers, lakes, and the ocean. Hence geology infers that man was one of the latest animals that was placed on the globe.

Thirteenthly. The surface of the earth has undergone an enormous amount of erosion by the action of the ocean, the rivers, and the atmosphere. The ocean has worn away the solid rock, in some parts of the world, not less than ten thousand feet in depth, and rivers have cut channels through the hardest strata, hundreds of feet deep and several miles long; both of which effects demand periods inconceivably long.

Fourteenthly. At a comparatively recent date, northern and southern regions have been swept over and worn down by the joint action of ice and water, the force in general having been directed towards the equator. This is called the _drift_ period.

Fifteenthly. Since the drift period, the ocean has stood some thousands of feet above its present level in many countries.

Sixteenthly. There is evidence, in regard to some parts of the world, that the continents are now experiencing slow vertical movements--some places sinking, and others rising. And hence a presumption is derived that, in early times, such changes may have been often repeated, and on a great scale.

Seventeenthly. Every successive change of importance on the earth's surface appears to have been an improvement of its condition, adapting it to beings of a higher organization, and to man at last, the most perfect of all.

Finally. The present races of animals and plants on the globe are for the most part disposed in groups, occupying particular districts, beyond whose limits the species peculiar to those provinces usually droop and die. The same is true, to some extent, as to the animals and plants found in the rocks; though the much greater uniformity of climate, that prevailed in early times, permitted organized beings to take a much wider range than at present; so that the zoological and botanical districts were then probably much wider. But the general conclusion, in respect to living and extinct animals, is, that there must have been several centres of creation, from which they emigrated as far as their natures would allow them to range.

It would be easy to state more principles of geology of considerable importance; but I have now named the principal ones that bear upon the subject of religion. A brief statement of the leading truths of theology, whether natural or revealed, which these principles affect, and on which they cast light, will give an idea of the subjects which I propose to discuss in these lectures.

The first point relates to the age of the world. For while it has been the usual interpretation of the Mosaic account, that the world was brought into existence nearly at the same time with man and the other existing animals, geology throws back its creation to a period indefinitely but immeasurably remote. The question is not whether man has existed on the globe longer than the common interpretation of Genesis requires,--for here geology and the Bible speak the same language,--but whether the globe itself did not exist long before his creation; that is, long before the six days' work, so definitely described in the Mosaic account? In other words, is not this a case in which the discoveries of science enable us more accurately to understand the Scriptures?

The introduction of death into the world, and the specific character of that death described in Scripture as the consequence of sin, are the next points where geology touches the subject of religion. Here, too, the general interpretation of Scripture is at variance with the facts of geology, which distinctly testify to the occurrence of death among animals long before the existence of man. Shall geology here, also, be permitted to modify our exposition of the Bible?

The subject of deluges, and especially that of Noah, will next claim our attention. For though it is now generally agreed that geology cannot detect traces of such a deluge as the Scriptures describe, yet upon some other bearings of that subject it does cast light; and so remarkable is the history of opinions concerning the Noachian deluge, that it could not on that account alone be properly passed in silence.

It is well known that the philosophy of antiquity, almost without exception, regarded matter as eternal; and in modern times, metaphysical theology has done its utmost to refute the supposed dangerous dogma. Geology affords us some new views of the subject; and although it does not directly refute the doctrine, it brings before us facts of such a nature as to show, that, so far as religion is concerned, such a refutation is of little importance. This will furnish another theme of discussion.

It may be thought extravagant, but I hazard the assertion, that no science is so prolific of direct testimony to the benevolence of the Deity as geology; and some of its facts bear strongly upon the objections to this doctrine. So important a subject will, therefore, occupy at least one or two lectures.

In all ages, philosophers have, in one form or another, endeavored to explain the origin and the phenomena of creation by a power inherent in nature, independent of a personal Deity, usually denominated _natural law_. And in modern times this hypothesis has assumed a popular form and a plausible dress. Not less than one lecture is demanded for its examination, especially as its advocates appeal with special confidence to geology for its support.

In existing nature, no one fact stands out more prominently than unity of design; and it is an interesting inquiry, whether the same general system prevailed through the vast periods of geological history as that which now adorns our globe. This question I shall endeavor to answer in the affirmative, by appealing to a multitude of facts.

Another question of deep interest in theology is, whether the Deity exercises over the world any special providence; whether he ever interferes with the usual order of things by introducing change; or whether he has committed nature to the control of unalterable laws, without any direct efficiency. Light is thrown on these points by the researches of geology, if I mistake not; and I shall not fail to attempt its development.

This science also discloses to us many new views of the vast plans of the Deity, and thus enlarges our conceptions of his wisdom and knowledge. In this field we must allow ourselves to wander in search of the golden fruit.

In the course of the discussion, we shall direct our attention to the new heavens and the new earth described in the Bible, and inquire whether geology does not cast a glimpse of light upon that difficult subject.

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.