who ought never to be parents is well known; the notorious case of the Jukes family is but one among many instances. We could scarcely expect in any community that individuals like the Jukes would take the initiative in movements for the eugenic development of the race, but it makes much difference whether such families exist in an environment like our own which is indifferent to the future of the race, or whether they are surrounded by influences of a more wholesome character which can scarcely fail to some extent to affect, and even to control, the reckless and anti-social elements in the community.
In considering this question, therefore, we are justified in putting aside not only any kind of human breeding resembling the artificial breeding of animals, but also, at all events for the present, every compulsory prohibition on marriage or procreation. We must be content to concern ourselves with ideals, and with the endeavour to exert our personal influence in the realization of these ideals.
III
Such ideals cannot, however, be left in the air; if they depend on individual caprice nothing but fruitless confusion can come of them. They must be firmly grounded on a scientific basis of ascertained fact. This was always emphasized by Galton. He not only initiated schemes for obtaining, but actually to some extent obtained, a large amount of scientific knowledge concerning the special characteristics and aptitudes of families, and his efforts in this direction have since been largely extended and elaborated.3 The feverish activities of modern life, and the constant vicissitudes and accidents that overtake families to-day, have led to an extraordinary indifference to family history and tradition. Our forefathers, from generation to generation, carefully entered births, baptisms, marriages, and deaths in the fly-leaf of the Family Bible. It is largely owing to these precious entries that many are able to carry their