the fact that the Negro is crowded into parts of the cities where the sanitation is worst. They indicate that the Negro is out of his environment. In tropical Africa, to which the Negro is adapted by many centuries of natural selection, his expectation of life might be much longer than that of the white man. In the United States he is much less "fit," in the Darwinian sense.
In rural districts of the South, according to C. W. Stiles, the annual typhoid death rate per 100,000 population is:
| Whites | Negroes | |
|---|---|---|
| Males | 37.4 | 75.3 |
| Females | 27.4 | 56.3 |
These figures again show, not alone the greater intelligence of the white in matters of hygiene, but probably also the greater inherent resistance of the white to a disease which has been attacking him for many centuries. Biologically, North America is a white man's country, not a Negro's country, and those who are considering the Negro problem must remember that natural