Read Ebook: The Foot-prints of the Creator: or The Asterolepis of Stromness by Miller Hugh Agassiz Louis Contributor

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merely cuticular could be representative of the endo-skeletal,--of the opercular, maxillary, frontal, and occipital bones in the osseous fishes of a long posterior period,--fishes that were not ushered upon the scene until after the appearance of the reptile in its highest forms and of even the marsupial quadruped.

THE ASTEROLEPIS, ITS STRUCTURE, BULK, AND ASPECT.

FISHES OF THE SILURIAN ROCKS--UPPER AND LOWER. THEIR RECENT HISTORY, ORDER, AND SIZE.

Most directly, and after a fashion that at once discomfits the challenger.

Still, however, the question of organization remains. Did these ancient Placoid fishes stand high or low in the scale? According to the poet, "What can we reason but from what we know?" We are acquainted with the Placoid fishes of the present time; and from these only, taking analogy as our guide, can we form any judgment regarding the rank and standing of their predecessors, the Placoids of the geologic periods. But the consideration of this question, as it is specially one on which the later assertors of the development hypothesis concentrate themselves, I must, to secure the space necessary for its discussion, defer till my next chapter. Meanwhile, I am conscious I owe an apology to the reader for what he must deem tedious minuteness of description, and a too prolix amplitude of statement. It is only by representing things as they actually are, and in the true order of their occurrence, that the effect of the partially selected facts and exaggerated descriptions of the Lamarckian can be adequately met. True, the disadvantages of the more sober mode are unavoidably great. He who feels himself at liberty to arrange his collected shells, corals, and fish-bones, into artistically designed figures, and to select only the pretty ones, will be of course able to make of them a much finer show than he who is necessitated to represent them in the order and numerical proportions in which they occur on some pebbly beach washed by the sea. And such is the advantage, in a literary point of view, of the ingenious theorist, who, in making figures of his geological facts, takes no more of them than suits his purpose, over the man who has to communicate the facts as he finds them. But the homelier mode is the true one. "Could we obtain," says a distinguished metaphysician, "a distinct and full history of all that has passed in the mind of a child, from the beginning of life and sensation till it grows up to the use of reason,--how its infant faculties began to work, and how they brought forth and ripened all the various notions, opinions, and sentiments which we find in ourselves when we come to be capable of reflection,--this would be a treasure of natural history which would probably give more light into the human faculties than all the systems of philosophers about them since the beginning of the world. But it is in vain," he adds, "to wish for what nature has not put within the reach of our power." In like manner, could we obtain, it may be remarked, a full and distinct account of a single class of the animal kingdom, from its first appearance till the present time, "this would be a treasure of natural history which would cast more light" on the origin of living existences, and the true economy of creation, than all the theories of all the philosophers "since the beginning of the world." And in order to approximate to such a history as nearly as possible,--and it does seem possible to approximate near enough to substantiate the true readings of the volume, and to correct the false ones,--it is necessary that the real vestiges of creation should be carefully investigated, and their order of succession ascertained.

HIGH STANDING OF THE PLACOIDS.--OBJECTIONS CONSIDERED.

We have seen that some of the Silurian Placoids were large of size: the question still remains, Were they high in intelligence and organization?

The Edinburgh Reviewer, in contending with the author of the "Vestiges," replies in the affirmative, by claiming for them the first place among fishes. "Taking into account," he says, "the brain and the whole nervous, circulating, and generative systems, they stand at the highest point of a natural ascending scale." They are fishes, he again remarks, that rank among "the very highest types of their class."

Such is the ingenious piece of special pleading which this most popular of the Lamarckians directs against the standing and organization of the earlier fishes. Let us examine it somewhat in detail, and see whether the slight admixture of truth which it contains serves to do aught more than to render current, like the gilding of a counterfeit guinea spread over the base metal, the amount of error which lies beneath. I know not a better example than that which it furnishes, of the entanglement and perplexity which the meshes of an artificial classification, when converted, in argumentative processes, into symbols and abstractions, are sure to involve subjects simple enough in themselves.

"Like the old kings, with high exacting looks, Sceptred and globed,"

but like our modern constitutional monarchs, who govern by law; and, further, that an appeal from their decisions on all subjects within the jurisdiction of Nature should for ever be open to Nature herself. The seeming ingratitude of such a course, if the "complaints" be made in a right spirit and on proper grounds, Jupiter always rewards with gifts.

Let us now see for ourselves, in this spirit, whether there may not be something absolutely derogatory, in the existence of a cartilaginous skeleton, to the creatures possessing it; or whether a deficit of internal bone may not be greatly more than neutralized, as it assuredly must have been in the view of Linnaeus, Muller, and Owen, by a larger than ordinary share of a vastly more important substance.

THE PLACOID BRAIN. EMBRYONIC CHARACTERISTICS NOT NECESSARILY OF A LOW ORDER.

But is not the "cartilaginous structure" of the Placoids analogous to the embryonic state of vertebrated animals in general? Do not the other placoid peculiarities to which the author of the "Vestiges" refers,--such as the heterocercal or one-sided tail, the position of the mouth on the under side of the head, and the rudimental state of the maxillaries and intermaxillaries,--bear further analogies with the embryonic state of the higher animals? And is not "embryonic progress the grand key to the theory of development?" Let us examine this matter. "These are the characters," says this ingenious writer, "which, above all, I am chiefly concerned in looking to; for they are features of embryonic progress, and embryonic progress is the grand key to the theory of development." Bold assertion, certainly; but, then, assertion is not argument! The statement is not a reason for the faith that is in the author of the "Vestiges," but simply an avowal of it; it is simply a confession, not a defence, of the Lamarckian creed; and, instead of being admitted as embodying a first principle, it must be put stringently to the question, in order to determine whether it contain a principle at all.

THE PROGRESS OF DEGRADATION. ITS HISTORY.

It would be an easy matter for an ingenious theorist, not much disposed to distinguish between the minor and the master laws of organized being, to get up quite as unexceptionable a theory of degradation as of development. The one-eyed, one-legged Chelsea pensioner, who had a child, unborn at the time, laid to his charge, agreed to recognize his relationship to the little creature, if, on its coming into the world, it was found to have a green patch over its eye, and a wooden leg. And, in order to construct a hypothesis of progressive degradation, the theorist has but to take for granted the transmission to other generations of defects and compensating redundancies at once as extreme and accidental as the loss of eyes or limbs, and the acquisition of timber legs or green patches. The snake, for instance, he might regard as a saurian, that, having accidentally lost its limbs, exerted itself to such account throughout a series of generations, in making up for their absence, as to spin out for itself, by dint of writhing and wriggling, rather more than a hundred additional vertebrae, and to alter, for purposes of greater flexibility, the structure of all the rest. And as fishes, when nearly stunned by a blow, swim for a few seconds on their side, he might regard the flounders as a race of half-stunned fishes, previously degraded by the misplacement of their limbs, that, instead of recovering themselves from the blow given to some remote parent of the family, had expended all their energies in twisting their mouths round to what chanced to be the under side on which they were laid, and their eyes to what chanced to be the upper, and that made their pectorals serve for anal and dorsal fins, and their anal and dorsal fins serve for pectorals. But while we must recognize in nature certain laws of disturbance, if I may so speak, through which, within certain limits, traits which are the result of habit or circumstance in the parents are communicated to their offspring, we would err as egregiously, did we take only these into account, without noting that infinitely stronger antagonist law of reproduction and restoration which, by ever gravitating towards the original type, preserves the integrity of races, as the astronomer would, who, in constructing his orrery, recognized only that law of propulsion through which the planets speed through the heavens, without taking into account that antagonist law of gravitation which, by maintaining them in their orbits, insures the regularity of their movements. The law of restoration would recover and right the stunned fish laid on its side; the law of reproduction would give limbs to the offspring of the mutilated saurian. We have evidence, in the extremeness of the degradation in these cases, that it cannot be a degradation hereditarily derived from accident. Nature is, we find, active, not in perpetuating the accidental wooden legs and green patches of ancestors in their descendants, but in restoring to the offspring the true limbs and eyes which the parents have lost. It is, however, not with a theory of hereditary degradation, but a hypothesis of gradual development, that I have at present to deal; and what I have to establish as proper to the present stage of my argument is, that this principle of degradation really exists, and that the history of its progress in creation bears directly against the assumption that the earlier vertebrata were of a lower type than the vertebrata of the same ichthyic class which exist now.

This fact of degradation, strangely indicated in geologic history, with reference to all the greater divisions of the animal kingdom, has often appeared to me a surpassingly wonderful one. We can see but imperfectly, in those twilight depths to which all such subjects necessarily belong; and yet at times enough does appear to show us what a very superficial thing infidelity may be. The general advance in creation has been incalculably great. The lower divisions of the vertebrata preceded the higher;--the fish preceded the reptile, the reptile preceded the bird, the bird preceded the mammiferous quadruped, and the mammiferous quadruped preceded man. And yet, is there one of these great divisions in which, in at least some prominent feature, the present, through this mysterious element of degradation, is not inferior to the past? There was a time in which the ichthyic form constituted the highest example of life; but the seas during that period did not swarm with fish of the degraded type. There was, in like manner, a time when all the carnivora and all the herbivorous quadrupeds were represented by reptiles; but there are no such magnificent reptiles on the earth now as reigned over it then. There was an after time, when birds seem to have been the sole representatives of the warm-blooded animals; but we find, from the prints of their feet left in sandstone, that the tallest men might have

"Walked under their huge legs, and peeped about."

Further, there was an age when the quadrupedal mammals were the magnates of creation; but it was an age in which the sagacious elephant, now extinct, save in the comparatively small Asiatic and African circles, and restricted to two species, was the inhabitant of every country of the Old World, from its southern extremity to the frozen shores of the northern ocean; and when vast herds of a closely allied and equally colossal genus occupied its place in the New. And now, in the times of the high-placed human dynasty,--of those formally delegated monarchs of creation, whose nature it is to look behind them upon the past, and before them, with mingled fear and hope, upon the future,--do we not as certainly see the elements of a state of ever-sinking degradation, which is to exist for ever, as of a state of ever-increasing perfectibility, to which there is to be no end? Nay, of a higher race, of which we know but little, this much we at least know, that they long since separated into two great classes,--that of the "elect angels," and of "angels, that kept not their first estate."

EVIDENCE OF THE SILURIAN MOLLUSCS--OF THE FOSSIL FLORA. ANCIENT TREE.

After dwelling at such length on the earlier fishes, it may seem scarce necessary to advert to their lower contemporaries the mollusca,--that great division of the animal kingdom which Cuvier places second in the descending order, in his survey of the entire series, and first among the invertebrates; and which Oken regards as the division out of which the immediately preceding class of the vertebral animals have been developed. "The fish," he says, "is to be viewed as a mussel, from between whose shells a monstrous abdomen has grown out." There is, however, a peculiarity in the molluscan group of the Silurian system, to which I must be permitted briefly to refer, as, to employ the figure of Sterne, it presents "two handles" of an essentially different kind, and as in all such two-handled cases, the mere special pleader is sure to avail himself of only the handle which best suits his purpose for the time.

"Adam, the goodliest man of men since born His sons."

Is its tissue vascular or cellular, or, like that of some of the cryptogamia, intermediate? Or what, in fine, is the nature and bearing of its mute but emphatic testimony, on that doctrine of progressive development of late so strangely resuscitated?

"Hewn on Norwegian hills, to be the mast Of some great admiral."

This certainly is not the sort of arrangement demanded by the exigencies of the development hypothesis. A true wood at the base of the Old Red Sandstone, or a true Placoid in the Limestones of Bala, very considerably beneath the base of the Lower Silurian system, are untoward misplacements for the purposes of the Lamarckian; and who that has watched the progress of discovery for the last twenty years, and seen the place of the earliest ichthyolite transferred from the Carboniferous to the Cambrian system, and that of the earliest exogenous lignite from the Lias to the Lower Devonian, will now venture to say that fossil wood may not yet be detected as low in the scale as any vegetable organism whatever, or fossil fish as low as the remains of any animal? But though the response of the earlier geologic systems be thus unfavorable to the development hypothesis, may not men such as the author of the "Vestiges" urge, that the geologic evidence, taken as a whole, and in its bearing on groupes and periods, establishes the general fact that the lower plants and animals preceded the higher,--that the conifera, for instance, preceded our true forest trees, such as the oak and elm,--that, in like manner, the fish preceded the reptile, that the reptile preceded the bird, that the bird preceded the mammiferous quadruped and the quadrumana, and that the mammiferous quadruped and the quadrumana preceded man? Assuredly yes! They may and do urge that Geology furnishes evidence of such a succession of existences; and the arrangement seems at once a very wonderful and very beautiful one. Of that great and imposing procession of being of which this world has been the scene, the programme has been admirably marshalled. But the order of the arrangement in no degree justifies the inference based upon it by the Lamarckian. The fact that fishes and reptiles were created on an earlier day than the beasts of the field and the human family, gives no ground whatever for the belief that "the peopling of the earth was one of a natural kind, requiring time," or that the reptiles and fishes have been not only the predecessors, but also the progenitors of the beasts and of man. The geological phenomena, even had the author of the "Vestiges" been consulted in their arrangement, and permitted to determine their sequence, would yet have failed to furnish, not merely an adequate foundation for the development hypothesis, but even the slightest presumption in its favor. In making good the assertion, may I ask the reader to follow me through the details of a simple though somewhat lengthened illustration?

SUPERPOSITION NOT PARENTAL RELATION. THE BEGINNINGS OF LIFE.

Several thousand years ago, ere the upheaval of the last of our raised beaches, there existed somewhere on the British coast a submarine bed, rich in sea-weed and the less destructible zoophytes, and inhabited by the commoner crustaceae and molluscs. Shoals of herrings frequented it every autumn, haunted by their usual enemies the dog-fish, the cod, and the porpoise; and, during the other seasons of the year, it was swum over by the ling, the hake, and the turbot. A considerable stream, that traversed a wide extent of marshy country, waving with flags and reeds, and in which the frog and the newt bred by millions, entered the sea a few hundred yards away, and bore down, when in flood, its modicum of reptilian remains, some of which, sinking over the submarine bed, found a lodgment at the bottom. Portions of reeds and flags were also occasionally entombed, with now and then boughs of the pine and juniper, swept from the higher grounds. Through frequent depositions of earthy matter brought down by the streamlet, and of sand thrown up by the sea, a gradual elevation of the bottom went on, till at length the deep-sea bed came to exist as a shallow bank, over which birds of the wader family stalked mid-leg deep when plying for food; and on one occasion a small porpoise, losing his way, and getting entangled amid its shoals, perished on it, and left his carcass to be covered up by its mud and silt. That elevation of the land, or recession of the sea, to which the country owes its last acquired marginal strip of soil, took place, and the shallow bank became a flat meadow, raised some six or eight feet above the sea-level. Herbs, shrubs, and trees, in course of time covered it over; and then, as century succeeded century, it gathered atop a thick stratum of peaty mould, embedding portions of birch and hazel bushes, and a few doddered oaks. When in this state, at a comparatively recent period, an Italian boy, accompanied by his monkey, was passing over it, when the poor monkey, hard-wrought and ill-fed, and withal but indifferently suited originally for braving the rigors of a keen northern climate, lay down and died, and his sorrowing master covered up the remains. Not many years after, the mutilated corpse of a poor shipwrecked sailor was thrown up, during a night-storm, on the neighboring beach: it was a mere fragment of the human frame,--a mouldering unsightly mass, decomposing in the sun; and a humane herd-boy, scooping out a shallow grave for it, immediately over that of the monkey, buried it up. Last of all, a farmer, bent on agricultural improvement, furrowed the flat meadow to the depth of some six or eight feet, by a broad ditch, that laid open its organic contents from top to bottom. And then a philosopher of the school of Maillet and Lamarck, chancing to come that way, stepped aside to examine the phenomena, and square them with his theory.

But in this form at least it can be scarce necessary that the argument should be prolonged.

But the honest farmer's reminiscences of his deceased neighbor the weaver, and his use at second-hand of Hume's experience-argument, naturally lead me to another branch of the subject.

LAMARCKIAN HYPOTHESIS OF THE ORIGIN OF PLANTS. ITS CONSEQUENCES.

Such, regarding the origin of terrestrial vegetation, are the views of Maillet, Oken, and the author of the "Vestiges." They all agree in holding that the plants of the land existed in their first condition as weeds of the sea.

THE TWO FLORAS, MARINE AND TERRESTRIAL. BEARING OF THE EXPERIENCE ARGUMENT.

Is the reader acquainted with the graphic verse, and scarce less graphic prose, in which Crabbe describes the appearances presented by a terrestrial vegetation affected by the waters of the sea? In both passages, as in all his purely descriptive writings, there is a solidity of truthful observation exhibited, which triumphs over their general homeliness of vein.

"On either side Is level fen, a prospect wild and wide, With dykes on either hand, by ocean self-supplied. Far on the right the distant sea is seen, And salt the springs that feed the marsh between; Beneath an ancient bridge the straitened flood Rolls through its sloping banks of slimy mud; Near it a sunken boat resists the tide, That frets and hurries to the opposing side; The rushes sharp, that on the borders grow, Bend their brown florets to the stream below, Impure in all its course, in all its progress slow. Here a grave Flora scarcely deigns to bloom, Nor wears a rosy blush, nor sheds perfume. The few dull flowers that o'er the place are spread, Partake the nature of their fenny bed; Here on its wiry stem, in rigid bloom, Grows the salt lavender, that lacks perfume; Here the dwarf sallows creep, the septfoil harsh, And the soft slimy mallow of the marsh. Low on the ear the distant billows sound, And just in view appears their stony bound."

But what does experience say regarding the transmutative conversion of a marine into a terrestrial vegetation,--that experience on which the sceptic founds so much? As I walked along the green edge of the Lake of Stennis, selvaged by the line of detached weeds with which a recent gale had strewed its shores, and marked that for the first few miles the accumulation consisted of marine algae, here and there mixed with tufts of stunted reeds or rushes, and that as I receded from the sea it was the algae that became stunted and dwarfish, and that the reeds, aquatic grasses, and rushes, grown greatly more bulky in the mass, were also more fully developed individually, till at length the marine vegetation altogether disappeared, and the vegetable debris of the shore became purely lacustrine,--I asked myself whether here, if anywhere, a transition flora between lake and sea ought not to be found? For many thousand years ere the tall gray obelisks of Stennis, whose forms I saw this morning reflected in the water, had been torn from the quarry, or laid down in mystic circle on their flat promontories, had this lake admitted the waters of the sea, and been salt in its lower reaches and fresh in its higher. And during this protracted period had its quiet, well-shattered bottom been exposed to no disturbing influences through which the delicate process of transmutation could have been marred or arrested. Here, then, if in any circumstances, ought we to have had in the broad, permanently brackish reaches, at least indications of a vegetation intermediate in its nature between the monocotyledons of the lake and the algae of the sea; and yet not a vestige of such an intermediate vegetation could I find among the up-piled debris of the mixed floras, marine and lacustrine. The lake possesses no such intermediate vegetation. As the water freshens in its middle reaches, the algae become dwarfish and ill-developed; one species after another ceases to appear, as the habitat becomes wholly unfavorable to it, until at length we find, instead of the brown, rootless, flowerless fucoids and confervae of the ocean, the green, rooted, flower-bearing flags, rushes, and aquatic grasses of the fresh water. Many thousands of years have failed to originate a single intermediate plant. And such, tested by a singularly extensive experience, is the general evidence.

THE DEVELOPMENT HYPOTHESIS IN ITS EMBRYONIC STATE. OLDER THAN ITS ALLEGED FOUNDATIONS.

Now, all this, and much more of the same nature, addressed to the Parisians of the reign of Louis the Fifteenth, passed, I doubt not, wonderfully well; but it will not do now, when almost every young girl, whether in town or country, is a botanist, and works on the algae have become popular. Since Maillet wrote, Hume promulgated his argument on Miracles, and La Place his doctrine of Probabilities. There can be no doubt that these have exerted a wholesome influence on the laws of evidence; and by these laws, as restricted and amended,--laws to which, both in science and religion, we ourselves conform,--we insist on trying the Lamarckian hypothesis, and in condemning it,--should it be found to have neither standing in experience nor support from testimony,--as a mere feverish dream, incoherent in its parts and baseless in its fabric. Give, we ask, but one well-attested instance of transmutation from the algae to even the lower forms of terrestrial vegetation common on our sea-coasts, and we will keep the question open, in expectation of more. It will not do to tell us--as Cuvier was told, when he appealed to the fact, determined by the mummy birds and reptiles of Egypt, of the fixity of species in all, even the slightest particulars, for at least three thousand years--that immensely extended periods of time are necessary to effect specific changes, and that human observation has not been spread over a period sufficiently ample to furnish the required data regarding them. The apology is simply a confession that, in these ages of the severe inductive philosophy, you have been dreaming your dream, cut off, as if by the state of sleep, from all the tangibilities of the real waking-day world, and that you have not a vestige of testimony with which to support your ingenious vagaries.

"First a seedling hid in grass; Then twig; then sapling; and, as century rolls Slow after century, a giant bulk, Of girth enormous, with moss-cushioned root Upheaved above the soil, and sides embossed With prominent wens globose."

"Sees God in clouds, or hears him in the wind."

One of the strangest passages in the "Sequel to the Vestiges," is that in which its author carries his appeal from the tribunal of science to "another tribunal," indicated but not named, before which "this new philosophy" "is to be truly and righteously judged." The principle is obvious, on which, were his opponents mere theologians, wholly unable, though they saw the mischievous character and tendency of his conclusions, to disprove them scientifically, he might appeal from theology to science: "it is with scientific truth," he might urge, "not with moral consequences, that I have aught to do." But on what allowable principle, professing, as he does, to found his theory on scientific fact, can he appeal from science to the want of it? "After discussing," he says, "the whole arguments on both sides in so ample a manner, it may be hardly necessary to advert to the objection arising from the mere fact, that nearly all the scientific men are opposed to the theory of the 'Vestiges.' As this objection, however, is likely to be of some avail with many minds, it ought not to be entirely passed over. If I did not think there were reasons, independent of judgment, for the scientific class coming so generally to this conclusion, I might feel the more embarrassed in presenting myself in direct opposition to so many men possessing talents and information. As the case really stands, the ability of this class to give at the present a true response upon such a subject appears extremely challengeable. It is no discredit to them that they are, almost without exception, engaged each in his own little department of science, and able to give little or no attention to other parts of that vast field. From year to year, and from age to age, we see them at work, adding, no doubt, much to the known, and advancing many important interests, but at the same time doing little for the establishment of comprehensive views of nature Experiments in however narrow a walk, facts of whatever minuteness, make reputations in scientific societies; all beyond is regarded with suspicion and distrust. The consequence is, that philosophy, as it exists amongst us, does nothing to raise its votaries above the common ideas of their time. There can therefore be nothing more conclusive against our hypothesis in the disfavor of the scientific class, than in that of any other section of educated men."

FINAL CAUSES.--THEIR BEARING ON GEOLOGIC HISTORY. CONCLUSION.

"Assert eternal Providence, And justify the ways of God to men."

The history of the four great monarchies of the world was typified, in the prophetic dream of the ancient Babylonish king, by a colossal image, "terrible in its form and brightness," of which the "head was pure gold," the "breast and arms of silver," the "belly and thighs of brass," and the legs and feet "of iron, and of iron mingled with clay." The vision in which it formed the central object was appropriately that of a puissant monarch; and the image itself typified the merely human monarchies of the earth. It would require a widely different figure to symbolize the great monarchies of creation. And yet Revelation does furnish such a figure. It is that which was witnessed by the captive prophet beside "the river Chebar," when "the heavens were opened, and he saw visions of God." In that chariot of Deity, glowing in fire and amber, with its complex wheels "so high that they were dreadful," set round about with eyes, there were living creatures, of whose four faces three were brute and one human; and high over all sat the Son of Man. It would almost seem as if, in this sublime vision,--in which, with features distinct enough to impress the imagination, there mingle the elements of an awful incomprehensibility, and which even the genius of Raffaelle has failed adequately to portray,--the history of all the past and of all the future had been symbolized. In the order of Providence intimated in the geologic record, the brute faces, as in the vision, outnumber the human;--the human dynasty is one, and the dynasties of the inferior animals are three; and yet who can doubt that they all equally compose parts of a well-ordered and perfect whole, as the four faces formed but one cherubim; that they have been moving onward to a definite goal, in the unity of one grand harmonious design,--now "lifted up high" over the comprehension of earth,--now let down to its humble level; and that the Creator of all has been ever seated over them on the throne of his providence,--a "likeness in the appearance of a man,"--embodying the perfection of his nature in his workings, and determining the end from the beginning?

"Behold a wonder! They but now who seemed In bigness to surpass earth's giant sons, Now less than smallest dwarfs, in narrow room Thronged numberless; like that pygmean race Beyond the Indian mount; or fairy elves, Whose midnight revels, by a forest side Or fountain, some belated peasant sees, Or dreams he sees, while, overhead, the moon Sits arbitress, and nearer to the earth Wheels her pale course."

"The creatures see of flood and field, And those that travel on the wind, With them no strife can last; they live In peace and peace of mind."

"Of general ORDER since the whole began?"

May not, in short, what we term degradation be merely one of the modes resorted to for filling up the voids in creation, and thereby perfecting a scale which must have been originally not merely a scale of narrow compass, but also of innumerable breaks and blanks, hiatuses and chasms? Such, certainly, would be the reading of the enigma which a Soame Jenyns or a Bolingbroke would suggest; but the geologist has learned from his science, that the completion of a chain of at least contemporary being, perfect in its gradations, cannot possibly have formed the design of Providence. Almost ever since God united vitality to matter, the links in this chain of animated nature, as if composed of a material too brittle to bear their own weight when stretched across the geologic ages, have been dropping one after out, from his hand, and sinking, fractured and broken, into the rocks below. It is urged by Pope, that were "we to press on superior powers," and rise from our own assigned place to the place immediately above all, we would, in consequence of the transposition,

"In the full creation leave a void, Where, one step broken, the great scale's destroyed. From nature's chain whatever link we strike, Tenth or ten thousandth, breaks the chain alike."

The poet could scarce have anticipated that there was a science then sleeping in its cradle, and dreaming the dreams of Whiston, Leibnitz, and Burnet, which was one day to rise and demonstrate that both the tenth and the ten thousandth link in the chain had been already broken and laid by, with all the thousands of links between; and that man might laudably "press on superior powers," and attain to a "new nature," without in the least affecting the symmetry of creation by the void which his elevation would necessarily create; that, in fine, voids and blanks in the scale are exceedingly common things; and that, if men could, by rising into angels, make one blank more, they might do so with perfect impunity. Further, even were the graduated chain of Bolingbroke a reality, and not what Johnson well designates it, an "absurd hypothesis," and were what I have termed the interpolation of links necessary to its completion, the mere filling up of the original blanks and chasms would not necessarily involve the fact of degradation, seeing that each blank could be filled up, if I may go express myself, from its lower end. Each could be as certainly occupied to the full by an elevation of lower forms, as by a humiliation of the higher. We might receive the hypothesis of Bolingbroke, and yet find the mysterious fact of degradation remain an unsolved riddle in our hands.

I am aware that I stand on the confines of a mystery which man, since the first introduction of sin into the world till now, has "vainly aspired to comprehend." But I have no new reading of the enigma to offer. I know not why it is that moral evil exists in the universe of the All-Wise and the All-Powerful; nor through what occult law of Deity it is that "perfection should come through suffering." The question, like that satellite, ever attendant upon our planet, which presents both its sides to the sun, but invariably the same side to the earth, hides one of its faces from man, and turns it to but the Eye from which all light emanates. And it is in that God-ward phase of the question that the mystery dwells. We can map and measure every protuberance and hollow which roughens the nether disk of the moon, as, during the shades of night, it looks down upon our path to cheer and enlighten; but what can we know of the other? It would, however, seem, that even in this field of mystery the extent of the inexplicable and the unknown is capable of reduction, and that the human understanding is vested in an ability of progressing towards the central point of that dark field throughout all time, mayhap all eternity, as the asymptote progresses upon its curve. Even though the essence of the question should forever remain a mystery, it may yet in its reduced and defined state, serve as a key for the laying of other mysteries open. The philosophers are still as ignorant as ever respecting the intrinsic nature of gravitation; but regarded simply as a force, how many enigmas has it not served to unlock! And that moral gravitation towards evil, manifested by the only two classes of responsible beings of which there is aught known to man, and of which a degradation linked by mysterious analogy with a class of facts singularly prominent in geologic history is the result, occupies apparently a similar place, as a force, in the moral dynamics of the universe, and seems suited to perform a similar part. Inexplicable itself, it is yet a key to the solution of all the minor inexplicabilities in the scheme of Providence.

In a matter of such extreme niceness and difficulty, shall I dare venture on an illustrative example?

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