1. The Nebular Hypothesis assumes that during a past endless time there has existed an incalculable number of original atoms. Let us understand that according to the so-called atomic theory, matter is composed of indivisible particles, called atoms. Since the discovery of radium this theory has been considerably modified, each atom now being understood to consist of many thousands of smaller particles, called electrons. However, whether we call them atoms or electrons, the smallest, indivisible particles of matter are assumed to have existed during infinite past time. Now, the origin of these simplest component parts of matter remains an unsolved mystery. The mind is unable even to formulate a guess with reference to their organization.
2. A second postulate of the Nebular Hypothesis is the origin of force and motion in the huge gas ball which existed in the beginning. La Place says that "at some point concentration took place in the homogeneous mass, this contraction produced radiation of heat and light, and through the differences in temperature, motion and dynamic reaction were produced." The difficulty which inheres in this postulate is the unquestioned fact that all motion in nature follows certain immutable laws*, [*These laws, so far as known, form the basis of what we call physics and chemistry.] and the origin of these laws is not accounted for by the theory. Laws never make themselves, and their complexity,—immeasurably beyond our power of exploration—yet everywhere adjusted to a definite end, is so intricate that their origin can by no means be accounted for by chance.
3. According to the theory matter was first in "nebular" (gas) form, and that the gases existing diffused through space were, through the motion which originated, changed from a huge ball of fire-mist to a semi-solid sphere, which threw off smaller spheres (the planets) that gradually became solid. Now, this is contrary to our knowledge of gases. Gases may be produced from solids, but an incandescent gas will not, through simple motion, become a solid substance. Gases may be solidified, but only in two ways, by pressure or when greatly cooled,—when they become ice. But they do not retain this form when the pressure or the cooling agency is removed. Gases, as we know them, all have a tendency to expand indefinitely. They have no tendency to solidify, as the hypothesis presumes.
4. La Place assumed that the solar system when still in gaseous state, began to revolve upon its axis, and that, as the gas ball continued to revolve, it condensed. As condensation went on, the rotation became faster, and a ring of matter was thrown off from the hardening core. This ring again resolved itself into a rotating globe which, still in a fluid state, threw off other balls, which revolved around their mother, the first planet, even as the latter continued to follow an orbit around the central body, the sun. In this way the planets of the solar system, including the earth, (according to the theory), were evolved together with their satellites or moons. The difficulty attending this view of planetary evolution is found in the difference between the movements of a number of satellites around the planets. While the satellites of the earth, of Jupiter and of Saturn revolve from west to east, the moons of Uranus and Neptune have an orbital movement from east to west. This is regarded also by the friends of the Nebular Hypothesis as one of the gravest difficulties, since no mechanical law will explain the reverse movement of the satellites of the remotest planets when they, as well as Jupiter, Saturn, and the rest are supposed to have been cast off by the same central body.
5. According to the theory, the original atoms during the process of world-making united into molecules. The laws according to which atoms unite,—so that, for instance, the hydrogen atom each unites with two atoms of oxygen, and so down the list of all known existences,—these laws are among the assured results of scientific study. Now, the entire science of chemistry in all its branches is built upon the axiom that molecules are absolutely unalterable and that molecules of the same kind are always absolutely identical. A molecule of water is always and invariably composed of two atoms of hydrogen and one of oxygen. A molecule of sulphuric acid invariably contains two atoms of hydrogen, one of sulphur, and four of oxygen. A molecule of potassium chlorate is always composed of just one atom of potassium chloride and three atoms of oxygen. Never is there any variation of these proportions in the same element, and a chemist will, without handling the elements, merely by mathematical calculation, unerringly produce new combinations, relying on the absolute constancy of the relations of atoms and molecules. Now, the theory that in the beginning of things, out of a mass of atoms diffused without form through space, molecules came into being, each kind or type composed of atoms according to a proportion peculiarly its own, cannot be accepted unless it is shown in what manner the laws came into existence according to which these combinations take place. Clerk Maxwell concludes a masterly statement of this aspect of the hypothesis by asking: "Who can restrain the ulterior question, Whence then these myriad types of the same letter imprinted on the earth, the sun, the stars, as if the very mould used here had been lent to Sirius, and passed on through the constellations? No theory of evolution can be formed to account for the similarity of the molecules throughout all time, and throughout the whole region of the stellar universe; for evolution necessarily implies continuous change, and the molecule (as known to science) is incapable of growth or decay, of generation or destruction."
The Origin of Life.
The origin of life on our globe is not accounted for on the basis of the evolutionary hypothesis. At some time in the remote past, there must, according to the theory, have been a development of living substance from a mineral base. But if scientific experiment has shown anything it has shown the unreality of what was called "spontaneous generation." This term was very popular with the scientists of a century or two ago. It was believed that certain animal and vegetable forms gave birth, in the process of decay, to insect life. Putrefying meat gives rise to maggots. The origin of these grubs was referred to the power of "spontaneous generation." When the Italian naturalist Redi discovered that an exclusion of flies from meat was all that was necessary to prevent the production of grubs, the doctrine of spontaneous generation was thoroughly upset, for his time at least. But the microscope revealed in "pure" water the presence of thousands of small creatures, the infusoria. Again spontaneous generation was appealed to in order to explain their presence. But the famous experiments of Pasteur (related by Huxley in his lectures on The Origin of Species, Lecture III), proved conclusively that sterilized water will not produce living forms when the germs floating everywhere about in the air are excluded. Since that time all men of science agree that there is no such thing demonstrable as spontaneous generation. It has become an axiom that "Life only comes from life." But how the first germs of life originated, is a question for which there is no answer. Huxley admits: "Of the causes which led to the origination of living matter it may be said that we know absolutely nothing." "The present state of knowledge furnishes us with no link between the living and the not living."
However, while spontaneous generation is "absolutely inconceivable" (Darwin), and while no experiments made on dead matter have ever produced living (plant and animal) matter, life must have originated at some time from non-life according to the evolutionary hypothesis. The theory assumes that at some time the globe was in an incandescent stage. At that time there could not have been any life on our earth. But as the earth cooled, it is held that by some chemico-electric action (electric force acting upon elements in favorable combinations), inert, lifeless matter became endowed with the property which we call life, and this original living substance is called protoplasm. From it, by successive modifications, slow in their operation, the teeming variety of living things is believed to have developed. Now it is a notable fact, that many evolutionists (among them Alfred Russell Wallace, the co-discoverer of the theory which goes under Darwin's name) frankly admit the inability to account for the origin of protoplasm. From mineral substances, protoplasm differs in that it possesses the power of growth, development, and reproduction. The very first vegetable cell "must have possessed altogether new powers," says Mr. Wallace, "that of extracting carbon from the air and that of indefinite reproduction. Here,"—note this admission,—"we have indications of a new power at work." In other words, forces resident in matter no longer suffice. The evolutionistic principle breaks down.
Some fifty years ago it was thought that experimental proof had been found for the presence on earth of the original, simple, unorganized protoplasm; that the basis of all life on earth had been discovered,—in the depths of the ocean. The story of this "discovery" is entertainingly told by the Duke of Argyle in the "Nineteenth Century" magazine. We quote from his article.
"Along with the earlier specimens of deep sea deposits sent home by naturalists during the first soundings in connection with the Atlantic telegraph cable, there was very often a sort of enveloping slimy mucus in the containing bottles which arrested the attention and excited the curiosity of the specialists to whom they were consigned. It was structureless to all miscroscopic examination. But so is all the protoplasmic matter of which the lowest animals are found. Could it be a widely diffused medium of this protoplasmic material, not yet specialized or individualized into organic forms, nor itself yet in a condition to build up inorganic skeletons for a habitation? Here was a grand idea. It would be well to find missing links; but it would be better to find the primordial substance out of which all living things had come. The ultra-Darwinian enthusiasts were enchanted. Haeckel clapped his hands and shouted Eureka! loudly. Even the cautious and discriminating mind of Professor Huxley was caught by this new and grand generalization of the 'physical basis of life;' It was announced by him to the British Association in 1868. Dr. Will Carpenter took up the chorus. He spoke of 'a living expanse of protoplasmic substance,' penetrating with its living substance the 'whole mass' of the oceanic mud. A fine new Greek name was devised for this mother slime, and it was christened 'Bathybius,'" (from two Greek words meaning "depth" and "life,"), "from the consecrated deeps in which it lay. The conception ran like wildfire through the popular literature of science. Expectant imagination soon played its part. Wonderful movements were soon seen in this mysterious slime. It became an 'irregular network,' and it could be seen gradually 'altering its form,' so that 'entangled granules changed their relative positions."