The condition of the white tenant is sometimes little better than that of the negro. He usually farms a larger tract, 83.8 acres on the average (in 1910), as against 39.6 acres for the negro, and he is on the whole more prosperous; but there are many who live from hand to mouth, move frequently, habitually get into debt to the merchant or the landlord, and have little or no surplus at settling time. In the South in 1910 there were 866,000 white tenant farmers who cultivated 20.5 per cent of all the land, and since that time white tenancy has been increasing. The increase of land ownership is greater among the negroes than among the whites, who are in many cases illiterates. This illiteracy is one cause of their poverty, but not the only cause: a part of it is moral, involving a lack of steadfast purpose, and a part is physical. The researches conducted by the United States Government, the state boards of health, and the Rockefeller Foundation show clearly that much of the indolence charged to the less prosperous Southern rural whites is due to the effect of the hookworm, a tiny intestinal parasite common in most tropical and subtropical regions and probably brought from Africa or the West Indies by the negro. The Rockefeller Foundation is now spending nearly $300,000 a year in financing, wholly or in part, attempts to eradicate the disease in eight Southern States and in fifteen foreign countries. The parasite enters the body from polluted soil, usually through the feet, as a large part of the rural population goes barefoot in the summer; it makes its way to the intestinal canal, where it fixes itself, grows, and lays eggs which are voided and hatch in the soil. Since most country districts are without sanitary closets, reinfection may occur again and again, until an individual harbors a host of these tiny bloodsuckers, which interfere with his digestion and sap his vitality. It is now believed that the morbid appetites of the "clay eaters" are due to this infection. The fact that the negro who introduced the curse is less susceptible to the infection and is less affected by it than the white man is one of life's ironies. There is a brighter side to this picture, however. Of all the cultivated land in the South 65 per cent is worked by owners (white 60.6 per cent; colored 4.4 per cent) and this land is on the whole much better tilled than that let to tenants. It is true that some of the landowners are chronically in debt, burdened with mortgages and with advances for supplies. Some of them probably produce less to the acre than tenants working under close supervision, but the percentage of farms mortgaged is less in the South than in any other part of the country except the Mountain Division, and unofficial testimony indicates that few farms are lost through foreclosure.