So much for facts in general; let us now look for a moment at the particular class of facts of which this work is a collection.
The tendency of philosophic inquiry is more and more toward the origin of things. In the earlier stages of intellectual impulse, the mind is almost wholly absorbed in ministering to the necessities of the present; next, the mysterious uncertainty of the after life provokes inquiry, and contemplations of an eternity of the future command attention; but not until knowledge is well advanced does it appear that there is likewise an eternity of the past worthy of careful scrutiny, – without which scrutiny, indeed, the eternity of the future must forever remain a sealed book. Standing as we do between these two eternities, our view limited to a narrow though gradually widening horizon, as nature unveils her mysteries to our inquiries, an infinity spreads out in either direction, an infinity of minuteness no less than an infinity of immensity; for hitherto, attempts to reach the ultimate of molecules, have proved as futile as attempts to reach the ultimate of masses. Now man, the noblest work of creation, the only reasoning creature, standing alone in the midst of this vast sea of undiscovered truth, – ultimate knowledge ever receding from his grasp, primal causes only thrown farther back as proximate problems are solved, – man, in the study of mankind, must follow his researches in both of these directions, backward as well as forward, must indeed derive his whole knowledge of what man is and will be from what he has been. Thus it is that the study of mankind in its minuteness assumes the grandest proportions. Viewed in this light there is not a feature of primitive humanity without significance; there is not a custom or characteristic of savage nations, however mean or revolting to us, from which important lessons may not be drawn. It is only from the study of barbarous and partially cultivated nations that we are able to comprehend man as a progressive being, and to recognize the successive stages through which our savage ancestors have passed on their way to civilization. With the natural philosopher, there is little thought as to the relative importance of the manifold works of creation. The tiny insect is no less an object of his patient scrutiny, than the wonderful and complex machinery of the cosmos. The lower races of men, in the study of humanity, he deems of as essential importance as the higher; our present higher races being but the lower types of generations yet to come.
Hence, if in the following pages, in the array of minute facts incident to the successive peoples of which we speak, some of them appear small and unworthy of notice, let it be remembered that in nature there is no such thing as insignificance; still less is there anything connected with man unworthy of our most careful study, or any peculiarity of savagism irrelevant to civilization.
Different schools of naturalists maintain widely different opinions regarding the origin of mankind. Existing theories may be broadly divided into three categories; in the first two of which man is considered as a special creation, and in the third as a natural development from some lower type. The special-creation school is divided on the question of unity or diversity of race. The first party holds by the time-honored tradition, that all the nations of the earth are descended from a single human pair; the second affirms, that by one creative act were produced several special creations, each separate creation being the origin of a race, and each race primordially adapted to that part of the globe which it now inhabits. The third theory, that of the development school, denies that there ever were common centres of origin in organic creation; but claims that plants and animals generate spontaneously, and that man is but the modification of some preexisting animal form.
The first hypothesis, the doctrine of the monogenists, is ably supported by Latham, Prichard, and many other eminent ethnologists of Europe, and is the favorite opinion of orthodox thinkers throughout Christendom. The human race, they say, having sprung from a single pair, constitutes but one stock, though subject to various modifications. Anatomically, there is no difference between a Negro and a European. The color of the skin, the texture of the hair, the convolutions of the brain, and all other peculiarities, may be attributed to heat, moisture, and food. Man, though capable of subduing the world to himself, and of making his home under climates and circumstances the most diverse, is none the less a child of nature, acted upon and molded by those conditions which he attempts to govern. Climate, periodicities of nature, material surroundings, habits of thought and modes of life, acting through a long series of ages, exercise a powerful influence upon the human physical organization; and yet man is perfectly created for any sphere in which he may dwell; and is governed in his condition by choice rather than by coercion. Articulate language, which forms the great line of demarcation between the human and the brute creation, may be traced in its leading characteristics to one common source. The differences between the races of men are not specific differences. The greater part of the flora and fauna of America, those of the circumpolar regions excepted, are essentially dissimilar to those of the old world; while man in the new world, though bearing traces of high antiquity, is specifically identical with all the races of the earth. It is well known that the hybrids of plants and of animals do not possess the power of reproduction, while in the intermixture of the races of men no such sterility of progeny can be found; and therefore, as there are no human hybrids, there are no separate human races or species, but all are one family. Besides being consistent with sound reasoning, this theory can bring to its support the testimony of the sacred writings, and an internal evidence of a creation divine and spiritual, which is sanctioned by tradition, and confirmed by most philosophic minds. Man, unlike animals, is the direct offspring of the Creator, and as such he alone continues to derive his inheritance from a divine source. The Hebraic record, continue the monogenists, is the only authentic solution of the origin of all things; and its history is not only fully sustained by science, but it is upheld by the traditions of the most ancient barbarous nations, whose mythology strikingly resembles the Mosaic account of the creation, the deluge, and the distribution of peoples. The Semitic family alone were civilized from the beginning. A peculiar people, constantly upheld by special act of Providence from falling into paganism, they alone possessed a true knowledge of the mystery of creation. A universal necessity for some form of worship, a belief inherent in all mankind, in an omnipotent deity and a life beyond the grave, point to a common origin and prophesy a common destiny. This much for the monogenists.
The second hypothesis, that of the polygenists, holds that there was not one only, but several independent creations, each giving birth to the essential, unchangeable peculiarities of a separate race; thus constituting a diversity of species with primeval adaptation to their geographical distribution. Morton, Agassiz, Gliddon, and others in America, stand sponsors for this theory. The physiological differences of race, they say, which separate mankind into classes, do not result from climatic surroundings, but are inherited from original progenitors. They point to marked characteristics in various peoples which have remained unchanged for a period of four thousand years. In place of controverting divine revelation, they claim that Mosaic history is the history of a single race, and not the history of all mankind; that the record itself contains an implied existence of other races; and that the distribution of the various species or races of men, according to their relative organisms, was part of the creative act, and of no less importance than was the act of creation.
The third hypothesis, derived mainly from the writings of Lamarck, Darwin, and Huxley, is based upon the principle of evolution. All existing species are developments of some preëxisting form, which in like manner descended by true generation from a form still lower. Man, say they, bears no impress of a divine original that is not common to brutes; he is but an animal, more perfectly developed through natural and sexual selection. Commencing with the spontaneous generation of the lowest types of vegetable and animal life, – as the accumulation of mold upon food, the swarming of maggots in meat, the infusorial animalcules in water, the generation of insect life in decaying vegetable substances, – the birth of one form arising out of the decay of another, the slow and gradual unfolding from a lower to a higher sphere, acting through a long succession of ages, culminate in the grandeur of intellectual manhood. Thus much for this life, while the hope of a like continued progress is entertained for the life to come. While the tendency of variety in organic forms is to decrease, argue these latter-day naturalists, individuals increase in a proportion greater