self-repression—as of the camp-prowling coyote who seems to hold down his instinctively bristling mane by voluntary effort. And the visitor to their rancheria sent a wave of influence before as his approach was noted; laughter ceased, languor disappeared, and a forced, yet sullen, amiability took their place, though the children and females edged away; if he appeared unexpectedly or came too close, the children and younger adults simply flitted like young partridges, while the elders stiffened rigidly, with bristling brows and everting lips and purpling eyes, perhaps accompanied by harsh gutturization—indeed the curiously canine snarl and growl, often evoked by the stranger unintentionally, betrayed the bitterness of Seri antipathy toward even the most tolerable aliens. Every human is panoplied in a personality, perhaps intangible but none the less real, which repels undue approach and fixes limits to familiarity on the part of strangers, friends, kinsmen, and mates, according to their respective degrees of mutually elective affinity; but the Seri are so close to each other and so far from all others that they are collectively panoplied against extra-tribal personalities even as are antipathetic animals against each other—and the Seri can no more control the involuntary snarl and growl at the approach of the alien than can the hunting-dog at sight or smell of the timber-wolf. [Illustration: PL. XIX THE HELIOTYPE PRINTING CO., BOSTON TYPICAL SERI WARRIOR] While the highly developed traits represented by pedestrian habit and hand-and-tooth habit and segregative habit expressing race-sense are conspicuous during exercise, each carries an equally well-marked obverse. Thus, while the Seri are known as runners par excellence in a region of runners, and were named by aboriginal neighbors from their spryness of movement, they have been no less notorious among the Caucasian settlers of two generations for unparalleled laziness—for a lethargic sloth beyond that of sluggish ox and somnolent swine, which was an irritating marvel to the patient padres of the eighteenth century, and is today a byword in the even-tempered Land of Mañana; concordantly the sinewy hands and muscular jaws are noticeably inert during the intervals between intense functionings, are practically free from the spontaneous or nervous movements of habitually busy persons, and contribute by their immobility to the air of indolence or languor which so impressed padres and rancheros; concordantly also, the manifestations of race hate, doubtless culminating among warriors on the warpath, are strongly contrasted with the abject docility of the Seri groups when at peace and in camp near Costa Rica and other ranchos—a docility far exceeding that of the Papago, whose personal dignity is an ever-present possession, or that of Yaqui, whose strong spirit so often breaks the curb of Caucasian control. So the observer of the Seri is impressed by the intensity of functioning