Introductory.
It is undeniably true that the progress of scientific thought and speculative inquiry, both in this country and in Europe, is rapidly tending towards a purely materialistic view of the universe, or one that utterly excludes the ancient and long-predominating metaphysical conceptions of Life, to say nothing of the more regnant and universally prevailing conception of a God. And it is quite as undeniable that the current of experimental research and investigation is setting, with equal rapidity, in the same direction. According to the views of many of our more advanced chemists, physiologists, and other scientific and speculative writers and thinkers--those whose experimental investigations have, it is claimed, reached the ultimate implications of all material substance--there are but two immutable, indestructible, and thoroughly persistent elements in the universe--Matter and Motion. Everything else, they confidently assert, is either purely phenomenal, or else essentially mutable, ephemeral, transitory. Force, according to their theory, is only another name for motion or its correlates, and, hence, the two terms are interchangeably used by them in predicating their ultimate conclusions respecting matter.
Light, heat, electricity, magnetism, chemical affinity, molecular force, and even life itself, are only so many manifestations or expressions, they claim, of one and the same force in the universe--Motion, With the exception of matter, it is the only self-persistent, permanently enduring, ever active and reactive agency.
Light, they say, is dependent, heat conditional, electricity and magnetism more or less phenomenal, chemical affinity and molecular force mere modes or correlated forms of motion, and all-pervading life itself a mere postulate of the schools, or at best only the result of the dynamic force of molecules.
Deem not this collocation simply a burlesque on Scientific categories. Professor Bastian, in his great work on the "Beginnings of Life," has unhesitatingly said: "The 'vitalists' must give up their last stronghold--we cannot even grant them a right to assume the existence of a special 'vital force' whose peculiar office it is to effect the transformation of physical forces. The notion that such a force does exist, is based on no evidence; it is a mere postulate. The assumption of its existence carries with it nothing but confusion and contradiction, because the very supposition that it exists, and does so act, is totally averse to the general doctrine of the correlation of forces."
And this defiant challenger of the "vitalists," who thus half-sneeringly speaks of those who believe that the vital forces of the universe are among the highest potential factors expressed therein, is one who, for the last decade and a half, has mostly lived in the ephemeromorphic world, and who, in diving into the "beginnings of life," has so far lost his way that the all-glorious end of it is as much an inexplicable mystery to him now, as when he was more successfully expounding pathological anatomy and ruthlessly hacking away at anatomical subjects over the dissecting-slab of the London University College. Had he spent less time over this dissecting-slab, and more in studying the marvellous manifestations of life in its outspoken beauty of leaf, bud, flower, fruit--things of not mere guess and fancy--he would undoubtedly have had a higher appreciation of what is most vital in nature, and less of what is simply material in a non-functional sense. With Mr. Herbert Spencer, he gratuitously sneers at the "old specific-creation hypothesis," or the divine fiat in the beginning; but without that fiat, where would he find his ephemeromorphs? or even the dead tissues used in his organic infusions for the vainest of all human endeavors--that of producing life, or seeking to produce it, de novo? He is so immeasurably disgusted with the vitalists that he hardly allows himself to speak of "life" or even use the term "vital" as applied to its simplest manifestations, without quotationizing them as terms to provoke both incredulity and derision.
The world may, however, overlook much of this in him, in view of his past professional pursuits, as well as in consideration of his eminent services as a specialist in science. The dissecting-room of a university is not the most desirable place in the world for profoundly studying the vital forces of nature. It is too grim and ghastly a repository of dead men's skulls, and "holes where eyes did once inhabit," in which to regard "life's enchanting cup" as one sparkling to the brim. Detaching a muscle here, and laying bare another there; taking out a sightless eye in one subject, and putting the dissecting-knife deep into the pulseless heart of another; cutting the fragments of a human body into shreds and tatters over one dissecting-slab, and loading down another with splintered bones and mangled hands and limbs, is not exactly the sort of occupation to enkindle the highest enthusiasm for "life," in any of its more manifold phases in nature. Too many lifeless notions get crammed into the head--to say nothing of baffled endeavor in the pursuit--to admit of the more conclusive and satisfactory inductions respecting living organisms.
But why should an assumption of the existence of life carry with it any greater "confusion and contradiction," than a like assumption respecting either matter or motion? Simply because the materialists insist, in their logical inductions, upon so distributing the terms of their syllogism that only a negative conclusion shall follow.
"Matter and motion," they say, are alone indestructible.
Life is neither matter nor motion,