If numbers and social and industrial importance warrant special library facilities for children, certainly the same reasons underlie the special library work with foreigners which has within recent years been carried on extensively in the larger cities. Last month the census bureau issued an abstract of startling import to those who view in the coming of vast numbers from across the waters a menace to the institutions of this democracy. According to this official enumeration, in but fourteen of fifty cities having over 100,000 inhabitants in 1910 did native whites of native parentage contribute as much as one-half the total population. The proportion exceeded three-fifths in only four cities. On the other hand, in twenty-two cities of this class, of which fifteen are in New England and the Middle Atlantic divisions, less than one-third of the population were native whites of native parentage, over two-thirds in all but one of these cities consisting of foreign-born whites and their children. In his Ode delivered at Harvard, Lowell eloquently referred to "The pith and marrow of a Nation Drawing force from all her men, Highest, humblest, weakest, all, For her time of need, and then Pulsing it again through them, She that lifts up the manhood of the poor, She of the open soul and open door, With room about her hearth for all mankind!" This was written in 1865. Since then the rim of the Mediterranean has sent its enormous contribution of unskilled and unlettered human beings to the New World. There have been three great tides of migration from over-seas. The first came to secure liberty of conscience; the second sought liberty of political thought and action; the third came in quest of bread. And of the three, incomparably the greater problem of assimilation is that presented by the last comers. Inextricably interwoven are all the complexities which face the great and growing municipalities, politically and industrially and socially. These are the awful problems of congestion and festering slums, of corruption in public life, of the exploitation of womanhood, of terrible struggle with wretchedness and poverty. Rightly directed, the native qualities and strength of these peoples will bring a splendid contribution in the making of a virile citizenship. Wrongly shaped, their course in the life of the city may readily become of sinister import. Frequently they are misunderstood, and they easily misunderstand. The problem is one of education, but it is that most difficult problem, of education for grown-ups. Here perhaps the library may render the most distinct service, in that it can bring to them in their own tongues the ideals and the underlying principles of life and custom in their adopted country; and through their children, as they swarm into the children's rooms, is established a point of contact which no other agency could so effectually provide.