The Veddahs of Ceylon are probably the most in-and-in bred people that ever existed. Among them, the practice of a man marrying his younger sister did not occur only occasionally; according to Mr. Bailey, it was _the_ proper marriage. Among the Bintenne Veddahs, it may be said to have been, for perhaps two generations or so, extinct, whilst among those of Nilgala, it is at most only disappearing. Mr. Bailey believes that this practice is quite sufficient to account for the short stature as well as the weak and vacant expression of this people. He did not find many traces of insanity, idiocy, and epilepsy—maladies which such marriages, according to a common belief, might be supposed to produce. “But in other respects,” he says, “the injurious effects of this custom would seem to be plainly discernible. The race is rapidly becoming extinct; large families are all but unknown, and longevity is very rare. I have been at some pains to obtain reliable data to elucidate these points. Out of seventy-two Veddahs in Nilgala, fifty were adults, and twenty-two children. In one small sept, or family, there were nine adults and one child; in another, one child and eight adults; and so on. In Bintenne, out of three hundred and eight Veddahs, a hundred and seventy-five were adults and a hundred and thirty-three children. Here the disproportion is not so marked; but in one of the smaller tribes, more isolated than the rest, there were twenty adults, and but four children. The paucity of children, I think, must be ascribed to the degeneracy produced by such close intermarriages, for I have never heard a suspicion of infanticide existing among them. Out of fifty adults in Nilgala, only one appeared to have numbered seventy years, and but eight to have exceeded fifty. In Bintenne, of a hundred and seventy-five adults, two only seemed to have reached their seventieth, and but fourteen to have exceeded their fiftieth year. Such statistics seem to show the practical results of such connections. The Nilgala Veddahs, who still maintain an almost total isolation from other people, are rapidly disappearing. The Veddahs of Bintenne, who have abandoned the pernicious custom which I have described, and still intermarry among themselves, are becoming extinct, though more gradually.”[2001]