LECTURE TENTH. THE GEOLOGY OF THE ANTI-GEOLOGISTS. IT has been well remarked, that that writer would be equally in danger of error who would assign very abstruse motives for the conduct of great bodies of men, or very obvious causes for the great phenomena of nature. The motives of the masses, on a level always with the average comprehension, are never abstruse; the causes of the phenomena, on the other hand, are never obvious. And when these last are hastily sought after, not from any devotion to scientific truth, or any genuine love of it, but for some purpose of controversy, we may receive it as a sure and certain fact that they will not be found. Some mere plausibility will be produced instead, bearing on its front an obviousness favorable mayhap to its reception for the time by the vulgar, but in reality fatal to its claims in the estimate of all deep thinkers; while truth will meanwhile lie concealed far below, in the bottom of her well, until patiently solicited forth by some previously unthought of process, in the character of some wholly unanticipated result. Such, in the history of science, has been the course and character of error on the one hand, and of actual discovery on the other: the error has been always comparatively obvious, the discovery unexpected and abstruse. And as men descend in the scale of accomplishment or intellect, a nearer and yet nearer approximation takes place between their conceptions of the causes of the occult processes of nature, and the common and obvious motives which influence large masses of their fellows; until at length the sublime contrivances of the universe sink, in their interpretation of them, into the clumsy expedients of a bungling mechanism. Tested by their reading of the phenomena on this principle, we find curious gradations between the higher and the humbler orders of minds. The vortices of Descartes, for instance, involve but a simple idea, that might have been struck out by almost any individual of a tolerably lively fancy, who had walked by the side of a winding river, and seen sticks and straws revolving in its eddies. But no fancy, however active, or no reach of mere common sense, however respectable, could have originated, or conducted to a successful conclusion, that profound contemplation into which Newton fell in the garden of Woolsthorpe, when he saw the loosened apple drop from the tree, and succeeded in demonstrating that the planets are retained in their orbits by the same law which impels a falling pebble towards the ground. So little obvious, indeed, was the Newtonian scheme, that most of the contemporary generation of philosophers, some of them, such as Fontenelle and his brother academicians of France, men of no mean standing, died rejecting it. And the objections of Turrettine to the motion of the earth on its axis are, we find, still more obvious than even the idea of the vortices. It does at first seem natural enough to suppose, that if the earth's surface be speeding eastwards at the rate of several hundred miles in the hour (a thousand miles at the equator), the birds which flutter over it should be somewhat in danger of being left behind; and that atoms and down flakes floating in the atmosphere in a time of calm, instead of appearing, as they often do, either in a state of rest, or moving with equal freedom in every direc tion, ought to be seen hurrying westwards, as if puffed by the breath of a tornado. Such an objection must for a time have appeared as just as it seems obvious, especially in one's study on a Saturday night, with much of one's lecture still to write, and the Sabbath too near to permit of verification or experiment. Fontenelle, however, though he could not get over the difficulty of conceiving how the same gravitation which made a stone fall also kept the moon in its place, fairly surmounted that which puzzled Turrettine; and in his "Plurality of Worlds," -a publication of the same age as the "Compendium Theologica,” he makes his Marchioness surmount it too. "But I Have have a difficulty to solve,' he represents the lady as saying, 'and you must be serious. As the earth moves, the air changes every moment; so we breathe the air of another country.' 'Not at all,' replied I; 'for the air which encompasses the earth follows with us, and turns with us. you not seen the labors of the silkworm? The shell or cocoon which it weaves around itself with so much art is of a down very loose and soft; and so the earth, which is solid, is covered, from the surface twenty leagues upwards, with a kind of down, which is the air, and, like the shell of the silkworm, turns along with it."" Even Turrettine, however, was as far in advance of some of our contemners of science in the present day, as Fontenelle was in advance of Turrettine, or Newton in advance of Fontenelle. The old theologian could scarce have held, with a living ecclesiastic of the Romish Church in Ireland, Father Cullen, that the sun is possibly only a fathom in diameter; or have asserted with a most Protestant lecturer who addressed an audience in Edinburgh little more than three years ago, that, though God created all the wild animals, it was the devil who made the flesh-eaters among them fierce and carnivorous; and, of course, shortened their bowels, length ened their teeth, and stuck formidable claws into the points of their digits. * Further, the error of Turrettine was but that of his age, whereas our modern decriers of scientific fact and inference are always men greatly in the rear of theirs, and as far inferior to the ancient assertors of the same errors as the few untutored peasants and fishermen of our own time, located in remote parts of the country, who still retain the old faith in witchcraft, are inferior to the great lawyers, poets, and divines, — the Fairfaxes, Henry Mores, Judge Haleses, and Sir George Mackenzies, who in the seventeenth century entertained a similar belief. And so it may seem somewhat idle work to take any pains in "scattering" such a rear of darkness thin" as this forlorn phalanx composes. "Let them alone," said a lunatic in the lucid fit, to a soldier who had told him, when asked why he carried a sword, that it was to kill his enemies, "let them alone, and they will all die of themselves." But though very inconsiderable, there is a comparatively large proportion of the class perilously posted, on both sides of the Atlantic, in what used to be termed of old in Scotland *The gentleman here referred to lectured no later than October, 1853, against the doctrines of the geologists; and modestly chose as the scene of his labors the city of Hutton and Playfair. What he set himself specially to "demonstrate" was, as he said, that the geologic "theories as to antiquity of the earth, successive eras, &c., were not only fallacious and unphilosophical, but rendered nugatory the authority of the sacred Scriptures." Not only, however, did he exert himself in demolishing the geologists as infidel, but he denounced also as unsound the theology of good old Isaac Watts. The lines taught us in our infancy,— "Let dogs delight to bark and bite, For God hath made them so," were, he remarked, decidedly heterodox. They ought to have run instead, "Let dogs delight to bark and bite, Satan hath made them so"!!! "the chair of verity;" and there they sometimes succeed in doing harm, all unwittingly, not to the science which they oppose, but to the religion which they profess to defend. I was not a little struck lately by finding in a religious periodical of the United States, a worthy Episcopalian clergyman bitterly complaining, that whenever his sense of duty led him to denounce from his pulpit the gross infidelity of modern geology, he could see an unbelieving grin rising on the faces of not a few of his congregation. Alas! who can doubt that such ecclesiastics as this good clergyman must virtually be powerful preachers on the skeptical side, to all among their people who, with intelligence enough to appreciate the geologic evidence, are still unsettled in their minds respecting that of the Christian faith. And so on this consideration alone it may be found not uninstructive to devote the address of the present evening to an exposure of the errors and nonsense of our modern anti-geologists, —the true successors and representatives, in the passing age, of the Franciscan and Salamanca doctors of the fifteenth and seventeenth centuries. Let me first remark, that no one need expect to be original simply by being absurd. There is a cycle in nonsense, as certainly as in opinion of a more solid kind, which ever and anon brings back the delusions and errors of an earlier time: the follies of the present day are transcripts, unwittingly produced, and with of course a few variations, of follies which existed centuries ago; and it seems to be on this principle, a consequence, mayhap, of the limited range of the human mind, not only in its elucidations of truth, but also in its forms of error, - that scarce an explanation of geologic phenomena has been given by the anti-geologists of our own times, that was not anticipated by writers of the sixteenth and seventeenth centuries. It |