fascinating an advance as this no drake of any sensibility can withstand." The courting of the Argus pheasant, noted for the extreme beauty of the male's plumage, was observed by H.O. Forbes in Sumatra. It is the habit of this bird to make "a large circus, some ten or twelve feet in diameter, in the forest, which it clears of every leaf and twig and branch, till the ground is perfectly swept and garnished. On the margin of this circus there is invariably a projecting branch or high-arched root, at a few feet elevation above the ground, on which the female bird takes its place, while in the ring the male--the male birds alone possess great decoration--shows off all its magnificence for the gratification and pleasure of his consort and to exalt himself in her eyes." (H.O. Forbes, _A. Naturalist's Wanderings_, 1885, p. 131.) "All ostriches, adults as well as chicks, have a strange habit known as 'waltzing.' After running for a few hundred yards they will also stop, and, with raised wings, spin around rapidly for some time after until quite giddy, when a broken leg occasionally occurs.... Vicious cocks 'roll' when challenging to fight or when wooing the hen. The cock will suddenly bump down on to his knees (the ankle-joint), open his wings, and then swing them alternately backward and forward, as if on a pivot.... While rolling, every feather over the whole body is on end, and the plumes are open, like a large white fan. At such a time the bird sees very imperfectly, if at all; in fact, he seems so preoccupied that, if pursued, one may often approach unnoticed. Just before rolling, a cock, especially if courting the hen, will often run slowly and daintily on the points of his toes, with neck slightly inflated, upright, and rigid, the tail half-drooped, and all his body-feathers fluffed up; the wings raised and expanded, the inside edges touching the sides of the neck for nearly the whole of its length, and the plumes showing separately, like an open fan. In no other attitude is the splendid beauty of his plumage displayed to such advantage." (S.C. Cronwright Schreiner, "The Ostrich," _Zoölogist_, March, 1897.) As may be seen from the foregoing fairly typical examples, the phenomena of courtship are highly developed, and have been most carefully studied, in animals outside the mammal series. It may seem a long leap from birds to man; yet, as will be seen, the phenomena among primitive human peoples, if not, indeed, among many civilized peoples also, closely resemble those found among birds, though, unfortunately, they have not usually been so carefully studied.