It may be objected that, according to my view, the mortality of girls, bred of constitutionally impoverished males, should likewise have increased. But this high mortality among boy-infants and children must so weed out the weakliest males that many of these do not live to become fathers. Moreover, by developing into abnormal dominance the _male_ potential in her, the mother de-vitalises sons more than she de-vitalises daughters. Further, these crude hoyden-sisters of the weakly boys fail rather in the higher attributes of Sex than in mere survival-power. They survive, but they are marred in type by the stigmata of sex-immaturity or abnormality. Increasing sex-impoverishment is bringing into vogue--almost as a matter of routine--the performance on male infants of an unnatural (and a degenerative) Jewish rite. IV Of the many theories advanced to explain the determination of Sex in offspring, the true one is, undoubtedly, the relative parental power of the respective parents. Normally, this being well-balanced, the ratio of the sexes is about equal; the preponderance being on the male side, however, owing to the maternal parental potential being normally greater, because conserved by reason of her less onerous rôle in life. When parental potential is relatively greater in the father, female offspring is born. When greater in the mother, male offspring results. In the families of men notably virile, daughters preponderate. In those of women notably womanly, sons are in the majority. (Presuming in such case the parent of the other sex to be of average potence.) The preponderance of male-births during War-conditions is due to the fact that by far the greater stress of these conditions, with consequent depletion of vital reserves, falls upon the males. Hence the women--who although depleted likewise by the increased demands upon them, are less vitally exhausted than the men are--become relatively prepotent in parental potential. The more virile men being absent on military duty, moreover, the less virile members of the sex it is who preponderate in the paternal rôle. Other parental factors, as of age, health and circumstance, which affect the sex of offspring, do so _indirectly_ by their effects upon the relative vital and parental potential of mother and father. In corroboration of the view that power conserved in the mother engenders Maleness and masculine vigour in offspring, I have received the following letter from the Head-mistress of the village-school of Corley: "I was much interested in your article _re Boy-babies_. I think my school here is unique, there being 86 children on the roll, of whom 57 are boys and 29, girls. And of the children in the village who will be of age for admission this year, 7 are boys and 3, girls. "In the village there are several families composed of boys only. One family has 7 boys and 2 girls. " " " 6 " " 0 "