These difficulties notwithstanding, in the rest of this chapter let us consider a few of what are usually taken to be racial features of man. As before, the treatment must be illustrative; we cannot work through the list. Further, we must be content with a very rough division into bodily and mental features. Just at this point we shall find it very hard to say what is to be reckoned bodily and what mental. Leaving these niceties to the philosophers, however, let us go ahead as best we can.
Oh for an external race-mark about which there could be no mistake! That has always been a dream of the anthropologist; but it is a dream that shows no signs of coming true. All sorts of tests of this kind have been suggested. Cranium, cranial sutures, frontal process, nasal bones, eye, chin, jaws, wisdom teeth, hair, humerus, pelvis, the heart-line across the hand, calf, tibia, heel, colour, and even smell—all these external signs, as well as many more, have been thought, separately or together, to afford the crucial test of a man's pedigree. Clearly I cannot here cross-examine the entire crowd of claimants, were I even competent to do so. I shall, therefore, say a few words about two, and two only, namely, head-form and colour.
I believe that, if the plain man were to ask himself how, in walking down a London street, he distinguished one racial type from another, he would find that he chiefly went by colour. In a general way he knows how to make allowance for sunburn and get down to the native complexion underneath. But, if he went off presently to a museum and tried to apply his test to the pre-historic men on view there, it would fail for the simple reason that long ago they left their skins behind them. He would have to get to work, therefore, on their bony parts, and doubtless would attack the skulls for choice. By considering head-form and colour, then, we may help to cover a certain amount of the ground, vast as it is. For remember that anthropology in this department draws no line between ancient and modern, or between savage and civilized, but tries to tackle every sort of man that comes within its reach.
Head-shape is really a far more complicated thing to arrive at for purposes of comparison than one might suppose. Since no part of the skull maintains a stable position in regard to the rest, there can be no fixed standard of measurement, but at most a judgment of likeness or unlikeness founded on an averaging of the total proportions. Thus it comes about that, in the last resort, the impression of a good expert is worth in these matters a great deal more than rows of figures. Moreover, rows of figures in their turn take a lot of understanding. Besides, they are not always easy to get. This is especially the case if you are measuring a live subject. Perhaps he is armed with a club, and may take amiss the use of an instrument that has to be poked into his ears, or what not. So, for one reason or another, we have often to put up with that very unsatisfactory single-figure description of the head-form which is known as the cranial index. You take the greatest length and greatest breadth of the skull, and write down the result obtained by dividing the former into the latter when multiplied by 100. Medium-headed people have an index of anything between 75 and 80. Below that figure men rank as long-headed, above it as round-headed. This test, however, as I have hinted, will not by itself carry us far. On the other hand, I believe that a good judge of head-form in all its aspects taken together will generally be able to make a pretty shrewd guess as to the people amongst whom the owner of a given skull is to be placed.
Unfortunately, to say people is not to say race. It may be that a given people tend to have a characteristic head-form, not so much because they are of common breed, as because they are subjected after birth, or at any rate, after conception, to one and the same environment. Thus some careful observations made recently by Professor Boas on American immigrants from various parts of Europe seem to show that the new environment does in some unexplained way modify the head-form to a remarkable extent. For example, amongst the East European Jews the head of the European-born is shorter and wider than that of the American-born, the difference being even more marked in the second generation of the American-born. At the same time, other European nationalities exhibit changes of other kinds, all these changes, however, being in the direction of a convergence towards one and the same American type. How are we to explain these facts, supposing them to be corroborated by more extensive studies? It would seem that we must at any rate allow for a considerable plasticity in the head-form, whereby it is capable of undergoing decisive alteration under the influences of environment; not, of course, at any moment during life, but during those early days when the growth of the head is especially rapid. The further question whether such an acquired character can be transmitted we need not raise again. Before passing on, however, let this one word to the wise be uttered. If the skull can be so affected, then what about the brain inside it? If the hereditarily long-headed can change under suitable conditions, then what about the hereditarily short-witted?
It remains to say a word about the types of pre-historic men as judged by their bony remains and especially by their skulls. Naturally the subject bristles with uncertainties.
By itself stands the so-called Pithecanthropus (Ape-man) of Java, a regular "missing link." The top of the skull, several teeth, and a thigh-bone, found at a certain distance from each other, are all that we have of it or him. Dr. Dubois, their discoverer, has made out a fairly strong case for supposing that the geological stratum in which the remains occurred is Pliocene—that is to say, belongs to the Tertiary epoch, to which man has not yet been traced back with any strong probability. It must remain, however, highly doubtful whether this is a proto-human being, or merely an ape of a type related to the gibbon. The intermediate character is shown especially in the head form. If an ape, Pithecanthropus had an enormous brain; if a man, he must have verged on what we should consider idiocy.
Also standing somewhat by itself is the Heidelberg man. All that we have of him is a well-preserved lower jaw with its teeth. It was found more than eighty feet below the surface of the soil, in company with animal remains that make it possible to fix its position in the scale of pre-historic periods with some accuracy. Judged by this test, it is as old as the oldest of the unmistakable drift implements, the so-called Chellean (from Chelles in the department of Seine-et-Marne in France). The jaw by itself would suggest a gorilla, being both chinless and immensely powerful. The teeth, however, are human beyond question, and can be matched, or perhaps even in respect to certain marks of primitiveness out-matched, amongst ancient skulls of the Neanderthal order, if not also amongst modern ones from Australia.
We may next consider the Neanderthal group of skulls, so named after the first of that type found in 1856 in the Neanderthal valley close to Düsseldorf in the Rhine basin. A narrow head, with low and retreating forehead, and a thick projecting brow-ridge, yet with at least twice the brain capacity of any gorilla, set the learned world disputing whether this was an ape, a normal man, or an idiot. It was unfortunate that there were no proofs to hand of the age of these relics. After a while, however, similar specimens began to come in. Thus in 1866 the jaw of a woman, displaying a tendency to chinlessness combined with great strength, was found in the Cave of La Naulette in Belgium, associated with more or less dateable remains of the mammoth, woolly rhinoceros and reindeer. A few years earlier, though its importance was not appreciated at the moment, there had been discovered, near Forbes' quarry at Gibraltar, the famous Gibraltar skull, now to be seen in the Museum of the Royal College of Surgeons in London. Any visitor will notice at the first glance that this is no man of to-day. There are the narrow head, low crown, and prominent brow-ridge as before, supplemented by the most extraordinary eye-holes that were ever seen, vast circles widely separated from each other. And other peculiar features will reveal themselves on a close inspection; for instance, the horseshoe form in which, ape-fashion, the teeth are arranged, and the muzzle-like shape of the face due to the absence of the depressions that in our own case run down on each side from just outside the nostrils towards the corners of the mouth.
And now at the present time we have twenty or more individuals of this Neanderthal type to compare. The latest discoveries are perhaps the most interesting, because in two and perhaps other cases the man has been properly buried. Thus at La Chapelle-aux-Saints, in the French department of Corrèze, a skeleton, which in its head-form closely recalls the Gibraltar example, was found in a pit dug in the floor of a low grotto. It lay on its back, head to the west, with one arm bent towards the head, the other outstretched, and the legs drawn up. Some bison bones lay in the grave as if a food-offering had been made. Hard by were flint implements of a well-marked Mousterian type. In the shelter of Le Moustier itself a similar burial was discovered. The body lay on its right side, with the right arm bent so as to support the head upon a carefully arranged pillow of flints; whilst the left arm was stretched out, so that the hand might be near a magnificent oval stone-weapon chipped on both faces, evidently laid there by design. So much for these men of the Neanderthal type, denizens of the mid-palæolithic world at the very latest. Ape-like they doubtless are in their head-form up to a certain point, though almost all their separate features occur here and there amongst modern Australian natives. And yet they were men enough, had brains enough, to believe in a life after death. There is something to think about in that.