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Zaproburno Yollanica Directory 12
Page 06
As regards eugenics, there is no doubt that a vast and persistent elimination of lives goes on even in civilized countries. It has been calculated that, of every hundred English born alive, fifty do not survive to breed, and, of the remainder, half produce three-quarters of the next generation. But is the elimination selective? We can hardly doubt that it is to some extent. But what its results are--whether it mainly favours immunity from certain diseases, or the capacity for a sedentary life in a town atmosphere, or intelligence and capacity for social service--is largely matter of guesswork. How, then, can we say what is the type to breed from, even if we confine our attention to one country? If, on the other hand, we look farther afield, and study the results of race-mixture or "miscegenation," we but encounter fresh puzzles. That the half-breed is an unsatisfactory person may be true; and yet, until the conditions of his upbringing are somehow discounted, the race problem remains exactly where it was. Or, again, it may be true that miscegenation increases human fertility, as some hold; but, until it is shown that the increase of fertility does not merely result in flooding the world with inferior types, we are no nearer to a solution.
Although the Orang resides mostly amid the boughs of great trees during the daytime, he is very rarely seen squatting on a thick branch as other apes, and particularly the Gibbons, do. The Orang, on the contrary, confines himself to the slender leafy branches, so that he is seen right at the top of the trees, a mode of life which is closely related to the constitution of his hinder limbs, and especially to that of his seat. For this is provided with no callosites such as are possessed by many of the lower apes, and even by the Gibbons; and those bones of the pelvis, which are termed the ischia, and which form the solid framework of the surface on which the body rests in the sitting posture, are not expanded like those of the apes which possess callosities, but are more like those of man.
The first care of the male stickleback, when he has acquired his courting suit, is to build a suitable home for his future wives and children. So he picks up stems of grass and water-weeds with his mouth, and weaves them deftly into a compact nest as perfect as a bird's, though some what different in shape and pattern, it rather resembles a barrel, open at both ends, as though the bottom were knocked out: this form is rendered necessary because the eggs, when laid, have to be constantly aerated by passing a current of water through the nest as I shall describe hereafter. No. 1 shows us such a nest when completed, with the female stickleback loitering about undecided as to whether or not she shall plunge and enter it. You will observe that the fabric is woven round a fixed support of some waving water-weeds; but the cunning little architect does not trust in this matter to his textile skill alone; he cements the straws and other materials together with a gummy mortar of mucous threads secreted for the purpose by his internal organs.
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