The sections that are dwindling include the whole middle-class and the skilled artisans. The sections that are increasing are the very poor, the shiftless and drunken, the feeble minded—feeble-minded women, especially, are apt to be very prolific. There is an increase in those sections of the population which still actively believe the Catholic religion, such as the Irish and the Bretons, because the Catholic religion forbids limitation of families. Within the classes that are dwindling, it is the best elements that are dwindling most rapidly. Working-class boys of exceptional ability rise, by means of scholarships, into the professional class; they naturally desire to marry into the class to which they belong by education, not into the class from which they spring; but as they have no money beyond what they earn, they cannot marry young, or afford a large family. The result is that in each generation the best elements are extracted from the working classes and artificially sterilized, at least in comparison with those who are left. In the professional classes the young women who have initiative,
