It may be objected to the above views that, however accordant with chemical and physiological probabilities, they do not harmonize with the facts of geology; since the earliest fossiliferous formations contain almost exclusively the remains of animals, which must therefore have preceded, or at least been coeval with, the earliest forms of terrestrial vegetation. This objection is founded on well-ascertained facts, but facts which may have no connection with the third day of creation when regarded as a long period. The oldest geological formations are of marine origin, and contain remains of marine animals, with those of plants supposed to be allied to the existing algae or sea-weeds. Geology can not, however, a.s.sure us either that no land plants existed contemporaneously with these earliest animals, or that no land flora preceded them. These oldest fossiliferous rocks may mark the commencement of animal life, but they testify nothing as to the existence or non-existence of a previous period of vegetation alone. Farther, the rocks which contain the oldest remains of life exist as far as yet known in a condition so highly metamorphic as almost to preclude the possibility of their containing any distinguishable vegetable fossils; yet they contain vast deposits of carbon in the form of graphite, and if this, like more modern coaly matter, was acc.u.mulated by vegetable growth, it must indicate an exuberance of plants in these earliest geological periods, but of plants as yet altogether unknown to us. It is possible, therefore, that in these Eozoic rocks we may have remnants of the formations of the third Mosaic day; and if we should ever be so fortunate as to find any portion of them containing vegetable fossils, and these of species differing from any hitherto known, either in a fossil state or recent, and rising higher, in elevation and complexity of type, than the flora of the succeeding Silurian and Carboniferous eras, we may then suppose that we have penetrated to the monuments of this third creative aeon. The only other alternative by which these verses can be reconciled with geology is that adopted by the late Hugh Miller, who supposes that the plants of the third day are those of the Carboniferous period; but, besides the apparent anachronism involved in this, we now know that the coal flora consisted mainly of cryptogams allied to ferns and club-mosses, and of gymnosperms allied to the pines and cycads, the higher orders of plants being almost entirely wanting. For these reasons we are shut up to the conclusion that this flora of the third day must have its place before the Palaeozoic period of geology.
To those who are familiar with the vast lapse of time required by the geological history of the earth, it may be startling to ascribe the whole of it to three or four of the creative days. If, however, it be admitted that these days were periods of unknown duration, no reason remains for limiting their length any farther than the facts of the case require. If in the strata of the earth which are accessible to us we can detect the evidence of its existence for myriads of years, why may not its Creator be able to carry our view back for myriads more.
It may be humbling to our pride of knowledge, but it is not on any scientific ground improbable, that the oldest animal remains known to geology belong to the middle period of the earth"s history, and were preceded by an enormous lapse of ages in which the earth was being prepared for animal existence, but of which no records remain, except those contained in the inspired history.
It would be quite unphilosophical for geology to affirm either that animal life must always have existed, or that its earliest animals are necessarily the earliest organic beings. To use, with a slight modification, the words of an able thinker on these subjects,[88]
"For ages the prejudice prevailed that the historical period, or that which is coeval with the life of man, exhausted the whole history of the globe. Geologists removed that prejudice," but must not subst.i.tute "another in its place, viz., that geological time is coeval with the globe itself, or that organic life always existed on its surface."
A second doubt as to the existence of this primitive flora may be based on the statement that it included the highest forms of plants.
Had it consisted only of low and imperfect vegetables, there might have been much less difficulty in admitting its probability. Farther, we find that even in the Carboniferous period scarcely any plants of the higher orders flourished, and there was a preponderance of the lower forms of the vegetable kingdom. We have, however, in geological chronology, many ill.u.s.trations of the fact that the progress of improvement has not been continuous or uninterrupted, and that the preservation of the flora and fauna of many geological periods has been very imperfect. Hence the occurrence in one particular stratum or group of strata of few or low representatives of animal and vegetable life affords no proof that a better state of things may not have existed previously. We also find, in the case of animals, that each tribe attained to its highest development at the time when, in the progress of creation, it occupied the summit of the scale of life.
a.n.a.logy would thus lead us to believe that when plants alone existed, they may have a.s.sumed n.o.bler forms than any now existing, or that tribes now represented by few and humble species may at that time have been so great in numbers and development as to fill all the offices of our present complicated flora, as well as, perhaps, some of those now occupied by animals. We have this principle exemplified in the Carboniferous flora, by the magnitude of its arborescent club-mosses, and the vast variety of its gymnosperms. For this reason we may antic.i.p.ate that if any remains of this early plant-creation should be disinterred, they will prove to be among the most wonderful and interesting geological relics ever discovered, and will enlarge our views of the compa.s.s and capabilities of the vegetable kingdom, and especially of its lower forms.
A farther objection is the uselessness of the existence of plants for a long period, without any animals to subsist on or enjoy them, and even without forming any acc.u.mulation of fossil fuel or other products useful to man. The only direct answer to this has already been given.
The previous existence of plants may have been, and probably was, essential to the comfort and subsistence of the animals afterwards introduced. Independently of this, however, we have an a.n.a.logous case in the geological history of animals, which prevents this fact from standing alone. Why was the earth tenanted so long by the inferior races of animals, and why were so much skill and contrivance expended on their structures, and even on their external ornament, when there was no intelligent mind on earth to appreciate their beauties. Even in the present world we may as well ask why the uninhabited islands of the ocean are found to be replete with luxuriant vegetable life, why G.o.d causes it to rain in the desert where human foot never treads, or why he clothes with a marvellous exuberance of beautiful animal and plant forms the depths of the sea. We can but say that these things seemed and seem good to the Creator, and may serve uses unknown to us; and this is precisely what we must be content to say respecting the plant-creation of the Eozoic period.
Some writers[89] on this subject have suggested that the cosmical use of this plant-creation was the abstraction from the atmosphere of an excess of carbonic acid unfavorable to the animal life subsequently to be introduced. This use it may have served, and when its effects had been gradually lost through metamorphism and decay, that second great withdrawal of carbon which took place in the Carboniferous period may have been rendered necessary. The reasons afforded by natural history for supposing that plants preceded animals are thus stated by Professor Dana:
"The proof from science of the existence of plants before animals is inferential, and still may be deemed satisfactory. Distinct fossils have not been found, all that ever existed in the azoic[90] rocks having been obliterated. The arguments in the affirmative are as follows:
"1. The existence of limestone rocks among the other beds, similar limestones in later ages having been of organic origin; also the occurrence of carbon in the shape of graphite, graphite being, in known cases in rocks, a result of the alteration of the carbon of plants.
"2. The fact that the cooling earth would have been fitted for vegetable life for a long age before animals could have existed; the principle being exemplified everywhere that the earth was occupied at each period with the highest kinds of life the conditions allowed.
"3. The fact that vegetation subserved an important purpose in the coal-period in ridding the atmosphere of carbonic acid for the subsequent introduction of land animals, suggests a valid reason for believing that the same great purpose, the true purpose of vegetation, was effected through the ocean before the _waters_ were fitted for animal life.
"4. Vegetation being directly or mediately the food of animals, it must have had a previous existence. The latter part of the azoic age in geology we therefore regard as the age when the plant kingdom was inst.i.tuted, the latter half of the third day in Genesis. However short or long the epoch, it was one of the great steps of progress."
In concluding the examination of the work of the third day, I must again remind the reader that, on the theory of long creative periods, the words under consideration must refer to the first introduction of vegetation, in forms that have long since ceased to exist. Geology informs us that in the period of which it is cognizant the vegetation of the earth has been several times renewed, and that no plants of the older and middle geological periods now exist. We may therefore rest a.s.sured that the vegetable species, and probably also many of the generic and family forms of the vegetation of the third day, have long since perished, and been replaced by others suited to the changed condition of the earth. It is indeed probable that during the third and fourth days themselves there might be many removals and renewals of the terrestrial flora, so that perhaps every species created at the commencement of the introduction of plants may have been extinct before the close of the period. Nevertheless it was marked by the introduction of vegetation, which in one or another set of forms has ever since clothed the earth.
At the commencement of the third day the earth was still covered by the waters. As time advanced islands and mountain-peaks arose from the ocean, vomiting forth the molten and igneous materials of the interior of the earth"s crust. Plains and valleys were then spread around, rivers traced out their beds, and the ocean was limited by coasts and divided by far-stretching continents. At the command of the Creator plants sprung from the soil--the earliest of organized structures--at first probably few and small, and fitted to contend against the disadvantages of soils impregnated with saline particles and dest.i.tute of organic matter; but as the day advanced increasing in number, magnitude, and elevation, until at length the earth was clothed with a luxuriant and varied vegetation, worthy the approval of the Creator, and the admiring song of the angelic "sons of G.o.d."
CHAPTER IX.
LUMINARIES.
"And G.o.d said, Let there be luminaries in the expanse of heaven, to divide the day from the night; and let them be for signs and for seasons, and for days and for years. And let them be for luminaries in the expanse of heaven, to give light on the earth: and it was so.
"And G.o.d made two great luminaries, the greater luminary to preside over the day, the lesser luminary to preside over the night. He made the stars also. And G.o.d placed them in the expanse of heaven to give light on the earth, and to preside over the day and over the night, and to separate the light from the darkness: and G.o.d saw that it was good. And the evening and the morning were the fourth day."--Genesis i., 14-19.
After so long a sojourn on the earth, we are in these verses again carried to the heavens. Every scientific reader is struck with the position of this remarkable statement, interrupting as it does the progress of the organic creation, and const.i.tuting a break in the midst of the terrestrial history which is the immediate subject of the narrative; thus, in effect, as has often been remarked, dividing the creative week into two portions. Why was the completion of the heavenly bodies so long delayed? Why were light and vegetation introduced previously? If we can not fully answer these questions, we may at least suppose that the position of these verses is not accidental, though certainly not that which would have been chosen for its own sake by any fabricator of systems ancient or modern. Let us inquire, however, what are the precise terms of the record.
1. The word here used to denote the objects produced clearly distinguishes them from the product of the first day"s creation. Then G.o.d said, "Let _light_ be;" he now says, "Let _luminaries_ or light-bearers be." We have already seen that the light of the first day may have emanated from an extended luminous ma.s.s, at first occupying the whole extent of the solar system, and more or less attached to the several planetary bodies, and afterwards concentrated within the earth"s...o...b..t. The verses now under consideration inform us that the process of concentration was now complete, that our great central luminary had attained to its perfect state. This process of concentration may have been proceeding during the whole of the intervening time, or it may have been completed at once by some more rapid process of the nature of a direct interposition of creative power.
2. The division of light from darkness is expressed by the same terms, and is of the same nature with that on the first day. This separation was now produced in its full extent by the perfect condensation of the luminiferous matters around the sun.
3. The heavenly bodies are said to be intended for _signs_--that is, for marks or indications--either of the seasons, days, and years afterwards mentioned, or of the majesty and power of the true G.o.d, as the Creator of objects so grand and elevated as to become to the ignorant heathen objects of idolatrous worship; or perhaps of the earthly events they are supposed to influence. The arrangements now perfected for the first time enabled natural days, seasons, and years to have their limits accurately marked. Previously to this period there had been no distinctly marked seasons, and consequently no natural separation of years, nor were the limits of days at all accurately defined.
4. The terms _expanse_ and _heaven_, previously applied to the atmosphere, are here combined to denote the more distant starry and planetary heavens. There is no ambiguity involved in this, since the writer must have well known that no one could so far mistake as to suppose that the heavenly bodies are placed in that atmospheric expanse which supports the clouds.
5. The luminaries were _made_ or appointed to their office on the fourth day. They are not said to have been created, being included in the creation of the beginning. They were now completed, and fully fitted for their work. An important part of this fitting seems to have been the setting or placing them in the heavens, conveying to us the impression that the mutual relations and regular motions of the heavenly bodies were now for the first time perfected.
6. The stars are introduced in a parenthetical manner, which leaves it doubtful whether we are merely informed in general terms that they are works of G.o.d, as well as those heavenly bodies which are of more importance to us, or that they were arranged as heavenly luminaries useful to our earth on the fourth day. The term includes the fixed stars, and it is by no means probable that these were in any way affected by the work referred to the fourth day, any farther than their appearance from our earth is concerned. This view is confirmed by the language of the 104th Psalm, which in this part of the work mentions the sun and moon alone, without the fixed stars or planets.
It is evident that the changes referred to this period related to the whole solar system, and resulted in the completion of that system in the form which it now bears, or at least in the final adjustment of the motions and relations of the earth; and we have reason to believe that the condensation of the luminous envelope around the sun was one of the most important of these changes. On the hypothesis of La Place, already referred to as most in accordance with the earlier stages of the work, there seems to be no especial reason why the completion of the process of elaboration of the sun and planets should be accelerated at this particular stage. We can easily understand, however, that those closing steps which brought the solar system into a state of permanent and final equilibrium would form a marked epoch in the work; and we can also understand that now, on the eve of the introduction of animal life, there is a certain propriety in the representation of the Creator interfering to close up the merely inorganic part of his great work, and bring this department at least to its final perfection. The fourth day, then, in geological language, marks _the complete introduction of "existing causes" in inorganic nature_, and we henceforth find no more creative interference, except in the domain of organization. This accords admirably with the deductions of modern geology, and especially with that great principle so well expounded by Sir Charles Lyell, and which forms the true basis of modern geological reasonings--that we should seek in existing causes of change for the explanation of the appearances of the rocks of the earth"s crust. Geology probably carries us back to the introduction of animal life; and shows us that since that time land, sea, and atmosphere, summer and winter, day and night--all the great inorganic conditions affecting animal life--have existed as at present, and have been subject to modifications the same in kind with those which they now experience, though perhaps different in degree.
In this ancient record we find in like manner that the period immediately preceding the creation of animals witnessed the completion of all the great general arrangements on which these phenomena depend. The Bible, therefore, and science agree in the truth that existing causes have been in full force since the creation of animals; and that since that period the exercise of creative power has been limited to the organic world. This has a curious bearing, not often thought of, on modern theories of evolution as compared with the teaching of the Bible. In one important sense, absolute creation, in so far as the inorganic universe is concerned, is in our Mosaic narrative limited to the production of matter and force at first. All else is called making, forming, or appointing. Thus the production of all the arrangements of the waters, the atmosphere, the earth, and the heavens, in the work of the first four days, and even the introduction of plants, may be correctly termed an evolution or development from preformed materials, with the single exception that the reproductive power and specific diversities of plants are recognized as entirely new facts. Creation is properly resumed when animal life is introduced. Hence, in so far as a comparison with the terms of Genesis is concerned, hypotheses as to the evolution of animal life from inorganic matter are in a different position from hypotheses as to the previous evolution of the parts of inorganic nature; and still more so from statements as to the progress of inorganic nature subsequent to the introduction of animals; since within that period, which really includes the whole of geological time, absolutely no creation whatever in the domain of inanimate nature is affirmed in the Biblical record to have taken place. On the contrary, all the arrangements of inorganic nature are represented as finally completed before the creation of animals.
The obliquity of the earth"s axis, which gives us the changes of the seasons, is apparently included in the arrangements of the fourth creative day. The cause of this obliquity, and the time when it may have attained to its present amount, have been fertile themes of discussion. It is clear, however, that if this obliquity was established, as appears to be stated here, before the introduction of animal life, it can have no bearing on the changes of climate of which we have evidence in geological time since the dawn of animal life, unless, indeed, it is capable of greater variation than astronomers admit; and the same remark applies to supposed changes in the position of the poles themselves. There is, however, nothing in this record to oppose the idea of any secular changes in these arrangements under the laws appointed in the fourth creative period.
The record relating to the fourth day is silent respecting the mundane history of the period; and geology gives no very certain information concerning it. If, however, we a.s.sume that any of the Eozoic or pre-eozoic rocks are deposits of this or the preceding period, we may infer from the disturbances and alteration which these have suffered, prior to the deposition of the Cambrian and Silurian, that during or toward the close of this day the crust of the earth was affected by great movements. There is another consideration also leading to important conclusions in relation to this period. In the earliest fossiliferous rocks there seems to be good evidence that the dry land contemporary with the seas in which they were formed was of very small extent. Now, since on the third day a very plentiful and highly developed vegetation was produced, we may infer that during that period the extent of dry land was considerable, and was probably gradually increasing. If, then, the Cambrian and Silurian systems, so rich in marine organic remains, belong to the commencement of the fifth day, we must conclude that during the fourth much of the land previously existing had been again submerged. In other words, during the third day the extent of terrestrial surface was increasing, on the fourth day it diminished, and on the fifth it again increased, and probably has on the whole continued to increase up to the present time. One most important geological consequence of this is that the marine animals of the fifth day probably commenced their existence on sea bottoms which were the old soil surfaces of submerged continents previously clothed with vegetation, and which consequently contained much organic matter fitted to form a basis of support for the newly created animals.
I shall close my remarks on the fourth day by a few quotations from those pa.s.sages of Scripture which refer to the objects of this day"s work. I have already referred to that beautiful pa.s.sage in Deuteronomy where the Israelites are warned against the crime of worshipping those heavenly bodies which the Lord G.o.d hath "divided to every nation under the whole heaven." In the book of Job also we find that the heavenly bodies were in his day regarded as signal manifestations of the power of G.o.d, and that several of the princ.i.p.al constellations had received names:
"He commandeth the sun, and it shineth not; He sealeth up the stars;[91]
He alone spreadeth out the heavens, And walketh on the high waves of the sea;[92]
He maketh Arcturus, Orion, The Pleiades, and the hidden chambers of the south; Who doeth great things past finding out; Yea, marvellous things beyond number."
--Job ix., 9.
"Canst thou tighten the bonds of the Pleiades,[93]
Or loose the bands of Orion?
Canst thou bring forth the Mazzaroth in their season, Or lead forth Arcturus and its sons?
Knowest thou the laws of the heavens, Or hast thou appointed their dominion over the earth?"
--Job x.x.xviii., 31.
I may merely remark on these pa.s.sages that the chambers of the south are supposed to be those parts of the southern heavens invisible in the lat.i.tude in which Job resided. The bonds of Pleiades and of Orion probably refer to the apparently close union of the stars of the former group, and the wide separation of those of the latter; a difference which, to the thoughtful observer of the heavens, is more striking than most instances of that irregular grouping of the stars which still forms a question in astronomy, from the uncertainty whether it is real, or only an optical deception arising from stars at different distances coming nearly into a line with each other. I have seen in some recent astronomical work this very instance of the Pleiades and Orion taken as a marked ill.u.s.tration of this problematical fact in astronomy. _Mazzaroth_ are supposed by modern expositors to be the signs of the Zodiac.
On the whole, the Hebrew books give us little information as to the astronomical theories of the time when they were written. They are entirely non-committal as to the nature of the connections and revolutions of the heavenly bodies; and indeed regard these as matters in their time beyond the grasp of the human mind, though well known to the Creator and regulated by his laws. From other sources we have facts leading to the belief that even in the time of Moses, and certainly in that of the later Biblical writers, there was not a little practical astronomy in the East, and some good theory. The Hindoo astronomy professes to have observations from 3000 B.C., and the arguments of Baily and others, founded on internal evidence, give some color of truth to the claim. The Chaldeans at a very early period had ascertained the princ.i.p.al circles of the sphere, the position of the poles, and the nature of the apparent motions of the heavens as the results of revolution on an inclined axis. The Egyptian astronomy we know mainly from what the Greeks borrowed from it. Thales, 640 B.C., taught that the moon is lighted by the sun, and that the earth is spherical, and the position of its five zones. Pythagoras, 580 B.C., knew, in addition to the sphericity of the earth, the obliquity of the ecliptic, the ident.i.ty of the evening and morning star, and that the earth revolves round the sun. This Greek astronomy appears immediately after the opening of Egypt to the Greeks; and both these philosophers studied in that country. Such knowledge, and more of the same character, may therefore have existed in Egypt at a much earlier period.
The Psalms abound in beautiful references to the creation of the fourth day:
"When I consider the heavens, the work of thy fingers, The moon and the stars, which thou hast ordained; What is man, that thou art mindful of him?
Or the son of man, that thou visitest him?"
--Psalm viii.
"Who telleth the number of the stars, Who calleth them all by their names.
Great is our Lord, and of great praise; His understanding is infinite.
The Lord lifteth up the meek; He casteth the wicked to the ground."
--Psalm cxlvii.
"The heavens declare the glory of G.o.d, The firmament showeth his handiwork; Day unto day uttereth speech, Night unto night showeth knowledge.
They have no speech nor language, Their voice is not heard; Yet their line is gone out to all the earth, And their words to the end of the world.