The series of the fossiliferous deposits, which contain the remains of the animals which have lived on the earth in past ages of its history, and which can alone afford the evidence required by natural science of the order of appearance of their different species, may be grouped in the manner shown in the left-hand column of the following table, the oldest being at the bottom:--
Formations First known appearance of Quaternary.
Pliocene.
Miocene.
Eocene. Vertebrate _air_-population (Bats).
{82} Cretaceous.
Jura.s.sic Vertebrate _air_-population (Birds and Pterodactyles).
Tria.s.sic.
Upper Palaeozoic.
Middle Palaeozoic Vertebrate _land_-population (Amphibia, Reptilia [?]).
Lower Palaeozoic.
Silurian. Vertebrate _water_-population (Fishes).
Invertebrate _air_ and _land_-population (Flying Insects and Scorpions).
Cambrian Invertebrate _water_-population (much earlier, if _Eozoon_ is animal).
In the right-hand column I have noted the group of strata in which, according to our present information, the _land_, _air_, and _water_-populations respectively appear for the first time; and in consequence of the ambiguity about the meaning of "fowl," I have separately indicated the first appearance of bats, birds, flying reptiles, and flying insects. It will be observed that, if "fowl" means only "bird," or at most flying vertebrate, then the first certain evidence of the latter, in the Jura.s.sic epoch, is posterior to the first appearance of truly terrestrial _Amphibia_, and possibly of true reptiles, in the Carboniferous epoch (Middle Palaeozoic) by a prodigious interval of time.
The water-population of vertebrated animals first appears in the Upper Silurian.[12] Therefore, if we found ourselves on vertebrated animals and take "fowl" to mean birds only, or, at most, flying vertebrates, natural science says that the order of succession was water, land, and air-population, and {83} not--as Mr. Gladstone, founding himself on Genesis, says--water, air, land-population. If a chronicler of Greece affirmed that the age of Alexander preceded that of Pericles and immediately succeeded that of the Trojan war, Mr. Gladstone would hardly say that this order is "understood to have been so affirmed by historical science that it may be taken as a demonstrated conclusion and established fact." Yet natural science "affirms" his "fourfold order" to exactly the same extent--neither more nor less.
Suppose, however, that "fowl" is to be taken to include flying insects. In that case, the first appearance of an air-population must be shifted back for long ages, recent discovery having shown that they occur in rocks of Silurian age. Hence there might still have been hope for the fourfold order, were it not that the fates unkindly determined that scorpions--"creeping things that creep on the earth" _par excellence_--turned up in Silurian strata nearly at the same time. So that, if the word in the original Hebrew translated "fowl" should really after all mean "c.o.c.kroach"--and I have great faith in the elasticity of that tongue in the hands of Biblical exegetes--the order primarily suggested by the existing evidence--
2. Land and air-population; 1. Water-population;
and Mr. Gladstone"s order--
3. Land-population; 2. Air-population; 1. Water-population;
{84} can by no means be made to coincide. As a matter of fact, then, the statement so confidently put forward turns out to be devoid of foundation and in direct contradiction of the evidence at present at our disposal.[13]
If, stepping beyond that which may be learned from the facts of the successive appearance of the forms of animal life upon the surface of the globe, in so far as they are yet made known to us by natural science, we apply our reasoning faculties to the task of finding out what those observed facts mean, the present conclusions of the interpreters of nature appear to be no less directly in conflict with those of the latest interpreter of Genesis.
Mr. Gladstone appears to admit that there is some truth in the doctrine of evolution, and indeed places it under very high patronage.
I contend that evolution in its highest form has not been a {85} thing heretofore unknown to history, to philosophy, or to theology. I contend that it was before the mind of Saint Paul when he taught that in the fulness of time G.o.d sent forth His Son, and of Eusebius when he wrote the _Preparation for the Gospel_, and of Augustine when he composed the _City of G.o.d_ (p. 706).
Has any one ever disputed the contention, thus solemnly enunciated, that the doctrine of evolution was not invented the day before yesterday? Has any one ever dreamed of claiming it as a modern innovation? Is there any one so ignorant of the history of philosophy as to be unaware that it is one of the forms in which speculation embodied itself long before the time either of the Bishop of Hippo or of the Apostle to the Gentiles? Is Mr.
Gladstone, of all people in the world, disposed to ignore the founders of Greek philosophy, to say nothing of Indian sages to whom evolution was a familiar notion ages before Paul of Tarsus was born? But it is ungrateful to cavil at even the most oblique admission of the possible value of one of those affirmations of natural science which really may be said to be "a demonstrated conclusion and established fact." I note it with pleasure, if only for the purpose of introducing the observation that, if there is any truth whatever in the doctrine of evolution as applied to animals, Mr.
Gladstone"s gloss on Genesis in the following pa.s.sage is hardly happy:--
G.o.d created (_a_) The water-population; (_b_) The air-population.
And they receive His benediction (v. 20-23).
{86}
6. Pursuing this regular progression from the lower to the higher, from the simple to the complex, the text now gives us the work of the sixth "day," which supplies the land-population, air and water having been already supplied (pp. 695, 696).
The gloss to which I refer is the a.s.sumption that the "air-population"
forms a term in the order of progression from lower to higher, from simple to complex--the place of which lies between the water-population below and the land-population above--and I speak of it as a "gloss," because the pentateuchal writer is nowise responsible for it.
But it is not true that the air-population, as a whole, is "lower" or less "complex" than the land-population. On the contrary, every beginner in the study of animal morphology is aware that the organisation of a bat, of a bird, or of a pterodactyle presupposes that of a terrestrial quadruped; and that it is intelligible only as an extreme modification of the organisation of a terrestrial mammal or reptile. In the same way winged insects (if they are to be counted among the "air-population") presuppose insects which were wingless, and, therefore, as "creeping things," were part of the land-population. Thus theory is as much opposed as observation to the admission that natural science endorses the succession of animal life which Mr. Gladstone finds in Genesis. On the contrary, a good many representatives of natural science would be prepared to say, on theoretical grounds alone, that it is incredible that the "air-population" should have appeared before the "land-population"--and that, if this a.s.sertion is to be {87} found in Genesis, it merely demonstrates the scientific worthlessness of the story of which it forms a part.
Indeed, we may go further. It is not even admissible to say that the water-population, as a whole, appeared before the air and the land-populations. According to the Authorised Version, Genesis especially mentions, among the animals created on the fifth day, "great whales," in place of which the Revised Version reads "great sea monsters." Far be it from me to give an opinion which rendering is right, or whether either is right. All I desire to remark is, that if whales and porpoises, dugongs and manatees, are to be regarded as members of the water-population (and if they are not, what animals can claim the designation?), then that much of the water-population has, as certainly, originated later than the land-population as bats and birds have. For I am not aware that any competent judge would hesitate to admit that the organisation of these animals shows the most obvious signs of their descent from terrestrial quadrupeds.
A similar criticism applies to Mr. Gladstone"s a.s.sumption that, as the fourth act of that "orderly succession of times" enunciated in Genesis, "the land-population consummated in man."
If this means simply that man is the final term in the evolutional series of which he forms a part, I do not suppose that any objection will be raised to that statement on the part of students of natural science. But if the pentateuchal author goes further than this, and intends to say that which is ascribed to him by {88} Mr. Gladstone, I think natural science will have to enter a _caveat_. It is by not any means certain that man--I mean the species _h.o.m.o sapiens_ of zoological terminology--has "consummated" the land-population in the sense of appearing at a later period of time than any other. Let me make my meaning clear by an example.
From a morphological point of view, our beautiful and useful contemporary--I might almost call him colleague--the horse (_Equus caballus_), is the last term of the evolutional series to which he belongs, just as _h.o.m.o sapiens_ is the last term of the series of which he is a member. If I want to know whether the species _Equus caballus_ made its appearance on the surface of the globe before or after _h.o.m.o sapiens_, deduction from known laws does not help me. There is no reason, that I know of, why one should have appeared sooner or later than the other. If I turn to observation, I find abundant remains of _Equus caballus_ in Quaternary strata, perhaps a little earlier. The existence of _h.o.m.o sapiens_ in the Quaternary epoch is also certain. Evidence has been adduced in favour of man"s existence in the Pliocene, or even in the Miocene epoch. It does not satisfy me; but I have no reason to doubt that the fact may be so, nevertheless. Indeed, I think it is quite possible that further research will show that _h.o.m.o sapiens_ existed, not only before _Equus caballus_, but before many other of the existing forms of animal life; so that, if all the species of animals have been separately created, man, in this case, would by no means be the "consummation" of the land-population. {89}
I am raising no objection to the position of the fourth term in Mr.
Gladstone"s "order"--on the facts, as they stand, it is quite open to any one to hold, as a pious opinion, that the fabrication of man was the acme and final achievement of the process of peopling the globe. But it must not be said that natural science counts this opinion among her "demonstrated conclusions and established facts," for there would be just as much, or as little, reason for ranging the contrary opinion among them.
It may seem superfluous to add to the evidence that Mr. Gladstone has been utterly misled in supposing that his interpretation of Genesis receives any support from natural science. But it is as well to do one"s work thoroughly while one is about it; and I think it may be advisable to point out that the facts, as they are at present known, not only refute Mr. Gladstone"s interpretation of Genesis in detail, but are opposed to the central idea on which it appears to be based.
There must be some position from which the reconcilers of science and Genesis will not retreat, some central idea the maintenance of which is vital and its refutation fatal. Even if they now allow that the words "the evening and the morning" have not the least reference to a natural day, but mean a period of any number of millions of years that may be necessary; even if they are driven to admit that the word "creation," which so many millions of pious Jews and Christians have held, and still hold, to mean a sudden act of the Deity, signifies a process of gradual {90} evolution of one species from another, extending through immeasurable time; even if they are willing to grant that the a.s.serted coincidence of the order of Nature with the "fourfold order" ascribed to Genesis is an obvious error instead of an established truth; they are surely prepared to make a last stand upon the conception which underlies the whole, and which const.i.tutes the essence of Mr. Gladstone"s "fourfold division, set forth in an orderly succession of times." It is, that the animal species which compose the water-population, the air-population, and the land-population respectively, originated during three distinct and successive periods of time, and only during those periods of time.
This statement appears to me to be the interpretation of Genesis which Mr.
Gladstone supports, reduced to its simplest expression. "Period of time" is subst.i.tuted for "day"; "originated" is subst.i.tuted for "created"; and "any order required" for that adopted by Mr. Gladstone. It is necessary to make this proviso, for if "day" may mean a few million years, and "creation" may mean evolution, then it is obvious that the order (1) water-population, (2) air-population, (3) land-population, may also mean (1) water-population, (2) land-population, (3) air-population; and it would be unkind to bind down the reconcilers to this detail when one has parted with so many others to oblige them.
But even this sublimated essence of the pentateuchal doctrine (if it be such) remains as discordant with natural science as ever. {91}
It is not true that the species composing any one of the three populations originated during any one of three successive periods of time, and not at any other of these.
Undoubtedly, it is in the highest degree probable that animal life appeared first under aquatic conditions; that terrestrial forms appeared later, and flying animals only after land animals; but it is, at the same time, testified by all the evidence we possess, that the great majority, if not the whole, of the primordial species of each division have long since died out and have been replaced by a vast succession of new forms. Hundreds of thousands of animal species, as distinct as those which now compose our water, land, and air-populations, have come into existence and died out again, throughout the aeons of geological time which separate us from the lower Palaeozoic epoch, when, as I have pointed out, our present evidence of the existence of such distinct populations commences. If the species of animals have all been separately created, then it follows that hundreds of thousands of acts of creative energy have occurred, at intervals, throughout the whole time recorded by the fossiliferous rocks; and, during the greater part of that time, the "creation" of the members of the water, land, and air-populations must have gone on contemporaneously.
If we represent the water, land, and air-populations by _a_, _b_, and _c_ respectively, and take vertical succession on the page to indicate order in time, then the following schemes will roughly shadow forth the contrast I have been endeavouring to explain:-- {92}
Genesis (as interpreted by Nature (as interpreted by Mr. Gladstone). natural science).
b b b c^1 a^3 b^2 c c c c a^2 b^1 a a a b a^1 b a a a
So far as I can see, there is only one resource left for those modern representatives of Sisyphus, the reconcilers of Genesis with science; and it has the advantage of being founded on a perfectly legitimate appeal to our ignorance. It has been seen that, on any interpretation of the terms water-population and land-population, it must be admitted that invertebrate representatives of these populations existed during the lower Palaeozoic epoch. No evolutionist can hesitate to admit that other land animals (and possibly vertebrates among them) may have existed during that time, of the history of which we know so little; and, further, that scorpions are animals of such high organisation that it is highly probable their existence indicates that of a long antecedent land-population of a similar character.
Then, since the land-population is said not to have been created until the sixth day, it necessarily follows that the evidence of the order in which animals appeared must be sought in the record of those older Palaeozoic times in which only traces of the water-population have as yet been discovered.
Therefore, if any one chooses to say that the creative work took place in the Cambrian or Laurentian epoch, in exactly that manner which Mr.
Gladstone does, and natural science does not, affirm, natural {93} science is not in a position to disprove the accuracy of the statement. Only one cannot have one"s cake and eat it too, and such safety from the contradiction of science means the forfeiture of her support.
Whether the account of the work of the first, second, and third days in Genesis would be confirmed by the demonstration of the truth of the nebular hypothesis; whether it is corroborated by what is known of the nature and probable relative antiquity of the heavenly bodies; whether, if the Hebrew word translated "firmament" in the Authorised Version really means "expanse," the a.s.sertion that the waters are partly under this "expanse"
and partly above it would be any more confirmed by the ascertained facts of physical geography and meteorology than it was before; whether the creation of the whole vegetable world, and especially of "gra.s.s, herb yielding seed after its kind, and tree bearing fruit," before any kind of animal, is "affirmed" by the apparently plain teaching of botanical palaeontology, that gra.s.ses and fruit-trees originated long subsequently to animals--all these are questions which, if I mistake not, would be answered decisively in the negative by those who are specially conversant with the sciences involved.
And it must be recollected that the issue raised by Mr. Gladstone is not whether, by some effort of ingenuity, the pentateuchal story can be shown to be not disprovable by scientific knowledge, but whether it is supported thereby.
There is nothing, then, in the criticisms of Dr. Reville but what rather tends to confirm than to impair the old-fashioned {94} belief that there is a revelation in the book of Genesis (p. 694).
The form into which Mr. Gladstone has thought fit to throw this opinion leaves me in doubt as to its substance. I do not understand how a hostile criticism can, under any circ.u.mstances, tend to confirm that which it attacks. If, however, Mr. Gladstone merely means to express his personal impression, "as one wholly dest.i.tute of that kind of knowledge which carries authority," that he has destroyed the value of these criticisms, I have neither the wish nor the right to attempt to disturb his faith. On the other hand, I may be permitted to state my own conviction that, so far as natural science is involved, M. Reville"s observations retain the exact value they possessed before Mr. Gladstone attacked them.
Trusting that I have now said enough to secure the author of a wise and moderate disquisition upon a topic which seems fated to stir unwisdom and fanaticism to their depths, a fuller measure of justice than has. .h.i.therto been accorded to him, I retire from my self-appointed championship, with the hope that I shall not hereafter be called upon by M. Reville to apologise for damage done to his strong case by imperfect or impulsive advocacy. But, perhaps, I may be permitted to add a word or two, on my own account, in reference to the great question of the relations between science and religion; since it is one about which I have thought a good deal ever since I have been able to think at all; and about which I have {95} ventured to express my views publicly, more than once, in the course of the last thirty years.