The Indian’s chin is narrow, small, rounded, and, especially in the case of the women, retreating. There is no dimple or cleft. The teeth are big and even, and very rarely found projecting.
The Indian’s expression is stolid enough ordinarily, but when talking he has much play of feature, and he will gesticulate freely under the influence of coca. Among the tribes to the south of the Japura a man will look a stranger straight in the face, but north of that river the native has a more furtive glance. The Indian’s gaze is intense.
They are never demonstrative of affection, and, though they will touch a white man as a salutation, never touch each other. By this I mean that when friendlily disposed an Indian would return a white man’s salute, the offer of the hand, but no Indian would grasp a fellow-tribesman’s hand, or put an arm around his neck. Kissing is unknown among these people. Crevaux records that he saw children among the Calina kiss to show affection, but the nearest approach to an embrace I ever witnessed was a slap on the shoulder, probably under the shoulder-blade, which is the salutation between great friends. Mothers of course fondle their children, and I have even seen a woman with her arm round her husband, but such an exhibition is considered barely decent. Neither do they exhibit grief by weeping. The girl children cry occasionally, but no child ever screams; and adults may whine but never shed tears.
As regards brain-power, the Boro group are the most intelligent, with the possible exception of the Menimehe. I invariably found the Boro exceedingly anxious to learn from me anything they judged might be of utility to themselves. They evinced a definitely intelligent interest, not to be confounded with the ordinary curiosity of the untaught. Among all these peoples the power of mental development ceases after they have attained puberty.
One limitation that is to be noticed with all of them is their inability to grasp any chronological data. They have nothing in the way of a tally of any description, and in speaking use the vaguest expressions only for reckoning. It is my opinion, based on observation of the number of generations still living at any one time, that these people live to an advanced age. They grow elderly at from twenty-five to thirty years, and may, under favourable conditions, live another half-century or more. This is borne out by the fact that I found occasionally a man with grey hair—a sign in all coloured peoples, and I believe in Mongoloid peoples, of great age. But no Indian can give any information as to his own age, or the age of his children. For him age is non est, time of little value. He cannot tell you when he came to the neighbourhood in which you find him, though obviously only a year or two may have been passed there. His day is regulated to some extent by the rising and the setting of the sun, portioned only by its height in the heavens. If but occasion serve, one or other of the warriors, drunk with coca, will talk the whole night through, excitedly recounting some folk-tale, or endlessly boasting his feats in the hunt or on the war-path. The interruption is not resented by his comrades, nor does it seem to interfere with their slumber. Indians, in fact, never appear to sleep much, or rather they sleep little and often, as chance offers. Night is no more the time of repose than day, except in so far as darkness puts a stop to certain of their avocations. When sleeping on the ground an Indian curls up on one side with his knees to his chin, or he sleeps on his stomach, seldom lying on the back.[427]
Though, as has been noted, they sleep with no wrap or covering, these Indians are most sensitive to climatic changes. They are decidedly susceptible to a difference of locality, and, more than this, in a land where the extreme contrast of temperature is no more than twenty degrees throughout the year, with an average of half that total, they are affected by even slight variations of temperature. They fear the cold of the early morning, and, accustomed as they are to the half-lights of the forest, they dislike sunshine, and prefer to keep in the shade, fearful of sun-sickness if exposed to the sun.
It has been suggested by some travellers that the curious habit of the Indians of inducing sickness every morning by means of a feather was based on the idea that any food which was retained in the stomach all night must be unwholesome and ought to be removed immediately.[428] I have often seen the Indians do this, but always put it down to a desire to rid the stomach of the non-absorbent constituents of the coca powder, as only the men, who alone may take coca, resort to this practice. The Indian in the early morning drinks an infusion of herbs, as I have already mentioned, which induces the removal of such substances by vomiting, although not taken primarily for this purpose.
Sickness is also secured with the fingers after a prohibitive quantity of cahuana has been drunk, as afore noted, during a big dance. Having imbibed to his utmost capacity, the Indian adopts this simple expedient to enable him to drink again.
The tribes of the upper Amazons are, comparatively with others, very cleanly. But it is only comparatively. The Boro are the cleanest, and the Witoto unquestionably the most dirty. Immediately on rising all Indians resort to the river, but except among the Boro and the Resigeros, who rub themselves with sand, the performance can hardly be called washing, it is simply bathing. The Nonuya and Muenane are cleanly, like the Resigero. Even the Andoke, though they use no sand, are cleaner than the Witoto, for this tribe never wash, and only take a dip two or three times a day, while at least five times is the ordinary rule with the majority.[429]