The Origin of Man and of His Superstitions

by Carveth Read

For prey there was great variety of birds and reptiles (everywhere eaten by savages) and fishes; but we are most concerned with the mammalia, which he may be supposed to have pursued afoot. Of these the most important are the hoofed animals, which fall into two great groups, perhaps not closely connected—the odd-toed (Perissodactyls) and the even-toed (Artiodactyls). During the Oligocene there lived in Europe, or in North America, or in both—and, therefore, probably in Asia—numbers of the odd-toed group: tapirs; rhinoceroses of several species, some without horns, some with, some amphibious (Amynodonts), all smaller than their modern representatives; chalicotheres, strange beasts something like horses, but instead of hoofs they had claws on their toes—perhaps survived in China into the Pleistocene; small predecessors of the horse with three toes on each foot; titanotheres, hugest animals of their age, extinct in the middle of it—something like the rhinoceros and nearly as big as an elephant (Brontotherium). Of the even-toed group, pig-like animals abounded, and some true pigs appeared; entelodonts, or giant-pigs, were common; anthracotheres, somewhat pig-like in size and shape; ancestral camels about the size of sheep were to be had in North America; oreodonts, unfinished-looking creatures of many species; primitive deer and other ruminants, small in size and not having yet grown any horns. In Europe, during the Upper Oligocene, cœnotheres, small and graceful animals, lived in large herds around the lakes. There were also primitive proboscidia about half the size of modern elephants; many insectivores; and, amongst rodents, beavers and tailless hares. Generally, animals of this age that have left descendants were smaller than their modern representatives; and notably their brains were smaller.

In the Lower and Middle Miocene there appeared also horned cervuline deer, chevrotaines, and horned antelopes; dinotheres and mastodons, probably from Africa; primitive hedgehogs, moles and shrews; and in the Upper Miocene, hipparion, true hares, several varieties of hornless giraffe, true deer, and ancestral sheep. True horses and cattle are first known from Pliocene beds; but it is needless to follow the story further: the fauna becomes more and more modern in its character, and uncouth forms die out.

Anthropoids are first met with in the Miocene and in Europe: pliopithecus, allied to the gibbons, in the Lower; and dryopithecus, related to the chimpanzee, in the Middle Miocene; but they are believed to have come from Asia. There, in Pliocene beds of the Siwaliks (southern foot-hills of the Himalayas), occur the orang and chimpanzee, besides macaques, langurs and baboons. Since the orang is now found only in Borneo and Sumatra, and the chimpanzee only in Africa, southern Asia seems to have been the centre from which the anthropoids dispersed; and this seems to be the chief positive ground for believing that the human stock began to be differentiated in that region. Since, again, by the Middle Miocene a chimpanzee form had already migrated into Europe, it may be assumed that the orang was already distinct from it (and perhaps had spread eastward): the differentiation of these genera must, therefore, have happened earlier; and, therefore, also the differentiation of the human stock; so that this event cannot be put later than some time in the Oligocene.

How big was Lycopithecus to begin with? The answer to this question must affect our view of his relations both to prey and to enemies. Inasmuch as the three extant anthropoids and Man are all of about the same size, there is a presumption that their common ancestor was in stature superior to the gibbons and to the largest monkeys—in fact, a “giant” ape (to borrow a term from Dr. Keith). Dryopithecus “was smaller than the chimpanzee, but much larger than the gibbon.”[26] Awaiting further evidence of fossils, which is much to be desired, it is probable, on the whole, that Lycopithecus weighed less on the average than modern man, but more than the wolf.

As to competitors and aggressive enemies, there were snakes and crocodiles; but, confining our attention to carnivorous mammals, the time seems to have been favourable to the enterprise of a new hunter. By the middle of the Oligocene, the ancient Creodonts (primitive flesh-eaters which had flourished in the Eocene) were nearly extinct, represented in the deposits by their last surviving family, the Hyœnodonts. Ancestors of the modern carnivores, such as may be called by anticipation dogs and cats, derived (according to Prof. Scott) from the Creodont Family of the Miacidæ, were becoming numerous, but for the most part were still of small size. Apparently, the primitive dogs and their allies must, for some time, have been more formidable adversaries than the primitive cats, especially if we suppose them to have already begun to hunt in pack; and this is not improbable, both on account of their structure and because several distinct varieties and even genera, now extant, have that habit—such as wolf, jackal, dingo, dhole, Cape hunting-dog, etc. In the Upper Oligocene of North America, occurs a dog as big as a large modern wolf, and in Europe the bear-like dog, Amphicyon, of about the same size, but said to have been clumsy and slow-moving. There were several other dog-like species; they continue in the Miocene, and some of them increase in bulk; but true modern dogs or wolves (Canis) do not appear before the Pliocene. Then, too, first occur true bears (Ursus); hyænas in the Upper Miocene. “Cats” belong to two sub-families: (i) the true felines, our modern species and their ancestors; and (ii) the machærodonts, or sabre-toothed cats. The latter first appear in North America in the Lower Oligocene; the former in Europe in the Middle Oligocene. The sabre-tooths are so called from their thin, curved upper canines; which were so long (3 to 6 inches) that it is not easy to understand how they could open their mouths wide enough to bite with them. That they were effective in some way is proved by the fact that machærodonts, first appearing in the Lower Oligocene, increased in numbers and diversity of species for ages, and some of them in bulk. In North America, in the Upper Oligocene, one species was as large as a jaguar, and some of the biggest and most terrifying were contemporary with Man, and only became extinct in the Pleistocene. Their limbs were relatively shorter and thicker than those of the Felinæ. These, the true cats, at first progressed more slowly than the Machærodontidæ; but in the Siwalik deposits (Pliocene) there occur, along with machærodonts, forms resembling the leopard and the lynx, with others as large as tigers. The largest of all this group seems to have been the cave-lion, perhaps a large variety of the common African lion, which also lived with Man in Europe in the Pleistocene. These were serious competitors in the hunting-life of Lycopithecus and of primitive Man; and the effect of such competition in exterminating inferior forms is shown by the fate of the carnivorous marsupials of South America (allied to Thylacinus), which were the predatory fauna of that region, until in the Pliocene, North and South America having become united by continuous land, cats and dogs came in from the northern continent and put an end to them; and also by the fate of the creodonts, which in the Oligocene seem everywhere to have been exterminated by the new carnivores. In both cases the beaten competitors were very inferior in the size and complexity of their brains; and if Man has succeeded in the struggle for life against the same foes, in spite of his inferior bodily adaptation, it is probably due to his very superior brains. This may also be the reason why modern Man (Homo sapiens!), wandering everywhere over the world, has everywhere exterminated such experiments in human nature as Pithecanthropus, Eoanthropus, and Neanderthalensis; as others are soon to follow them into the Hades of extinct species.

These few pages give a ridiculously faint sketch of the animal world amidst which our remote ancestors began their career. But it may serve to indicate that there was always plenty to eat if you could kill it, and plenty of rivals who wanted their share. After the disappearance of the dinosaurs at the close of the Cretaceous period, the mammalia, already numerous, developed rapidly, and spread in ever multiplying numbers and diverging shapes over the whole area of the land. We may take it that from the Middle Eocene (at least) onwards the earth has always been as full of wild beasts as it would hold. To understand what it was like in the Middle Oligocene, one should read the adventures of hunters in South Africa seventy or eighty years ago (their verisimilitude is vouched for by Livingstone),[27] before a gun in the hands of every Kaffir had begun to thin the vast herds that then covered the whole landscape, and in whose numbers the wild hunters and the lions could make no appreciable diminution. The little Bushmen regarded themselves and the lions as joint owners and masters of all the game. The masters fought one another, indeed; but there was no necessity to fight, for there was more than enough for both: lions were then sometimes met in gangs of ten or a dozen. Game throughout the Cainozoic ages was abundant and of all sizes: many small, many middle-sized and some prodigious. Even in the Eocene, some of the Amblypoda (Dinoceras, Am.) and of the Barypoda (Arsinotherium, Af.) were as big as rhinoceroses; in the Oligocene, Titanotheres not much smaller than elephants; in South America, in Miocene and Pliocene times, the Toxodonts; in the Pleistocene, Ground-sloths of huge bulk, and Glyptodonts. Of Families still represented amongst living animals, dinotheres and mastodons occur in the Miocene; and elephant, rhinoceros, hippopotamus, giraffe have abounded from the Pliocene to recent times, in many species, over most of Africa and the northern hemisphere. Even the marsupials in Australia produced a species (Diprotodon) as large as a rhinoceros with a skull three feet long. Any one of these would have been a meal for a whole pack of hunters, if they could kill it—as we may be sure they could.

§ 5. Conclusion

From the addiction of some ancestral ape to animal food, and to the life of a hunter in order to obtain it, then, the special characteristics of Man seem to be natural consequences. The hypothesis from which everything follows is exceptionally simple and moderate. It is generally admitted that our ancestor was a large anthropoid—possibly more gregarious than others, possibly more apt to live upon the ground; but neither of these suppositions is requisite. He was adapted to his life, as the chimpanzee and gorilla are to theirs: in which, probably, they have gone on with little change for ages. But into his life a disturbing factor entered—the impulse to attack, hunt and eat animals, which extensively replaced his former peaceable, frugivorous habit. The cause of this change may have been a failure in the supply of his usual diet, or an “accidental variation” of appetite. Not a great number need have shared in the hunting impulse; it is enough that a few should have felt it, or even one. If advantageous and inheritable, it would spread through his descendants. It was advantageous (a) in enlarging their resources of nutrition, and (b) in enabling them to escape from the tropical forest. On the other hand, to those least fit for the new life it brought the disadvantages of more strenuous exertion and of competition with other carnivorous types. But with hands and superior intelligence, those that had the requisite character succeeded. There was rapid selection of those whose variations of structure, character, activity were most effective in dealing with game and with enemies; especially of those who combined and co-operated, and learned to direct co-operation by some rudimentary speech.

But, again, the hunting impulse here assumed to have possessed some anthropoid was not something entirely new; anthropoids and many other Primates are known to seize and devour birds, lizards and even small mammals when chance offers an easy opportunity. It is merely a greater persistence in this behaviour that turns it into hunting. How very improbable that such a change should not sometimes occur! Is it not likely to have occurred often, and with many failures? Similarly, of the resulting changes: the differentiation of our hands and feet is only an advance upon what you see in the gorilla; as for our ground-life, can the adult male gorilla be fairly called arboreal? Several Primates use unwrought weapons; most of them lead a gregarious life, to which our own is a return; they are co-operative at least in defence; like many other animals, they communicate by gestures and inarticulate vocal cries. Co-operative hunting, indeed, seems to be new in our Order; but since wolves and dogs, or their ancestors, fell in with it some time or other, why should it be beyond the capacity of apes? On second thoughts, is the co-operative raiding of plantations by baboons something altogether different from hunting in pack? Thus at each occasion of change in structure or function, Lycopithecus merely carried some tendency of the other Primates a little further, and a little further; until, certainly, he went a long way. The whole movement can be distinctly pictured throughout, and it has an air of being natural or even inevitable. Few hypotheses ask us to grant less than this one.