These are the kind of people—tramps, prostitutes, paupers, criminals, inebriates, all tending to be born a little defective—who largely make up the great degenerate families whose histories are from time to time recorded.
Such a family was that of the Jukes in America, who, in the course of five generations, by constantly intermarrying with bad stocks, produced 709 known descendants who were on the whole unfit for society, and have been a constant danger and burden to society.
A still larger family of the same kind, more recently studied in Germany, consisted of 834 known persons, all descended from a drunken vagabond woman, probably somewhat feeble-minded but physically vigorous. The great majority of these descendants were prostitutes, tramps, paupers, and criminals (some of them murderers), and the direct cost in money to the Prussian State for the keep and care of this woman and her family has been a quarter of a million pounds.
Yet another such family is that of the "Zeros." Three centuries ago they were highly respectable people, living in a Swiss valley. But they intermarried with an insane stock, and subsequently married other women of an unbalanced nature. In recent times 310 members of this family have been studied, and it is found that vagrancy, feeble-mindedness, mental troubles, criminality, pauperism, immorality are, as it may be termed, their patrimony.