In association among races, unless there is some strong cementing influence to counteract it, friction is likely to occur between them in proportion to racial difference. And so long as racial antipathy shall exist—and practical minded men see no signs of an end of it in the near future—regulations for the promotion of harmony should be encouraged by both whites and blacks. It would be almost as reasonable to expect an idiot and a genius to find a common ground of association as to expect it of a white man and a Negro. For in both races there is a failure to recognize that consciousness of kind which is the basis of all pleasant association. Indeed, even the subdivisions of the white race show a strong preference each for those of his own division. An Italian prefers to associate with an Italian; a German, with Germans; and a Jew, with Jews. So, in the last analysis, the most potent reason for the segregation of the whites and the Negroes is their unlikeness. For they are antipodal in the extreme: the nadir and zenith of peoples. This dissimilarity cannot be removed by soap and water, time, charity, education, or culture. After all these it will yet remain. Another reason for segregation is the criminality and immorality of the Negro race. Even if it would benefit a few Negroes or satisfy their vanity to travel with whites or to live on the same street with them is little reason why the comfort, property values, health and morals of the whites should be endangered thereby. The better elements of society have rights as well as the worst and the majority should receive consideration as well as the minority. It is in strict accord with sound ethical principles that laws should aim to level up rather than to level down. Again, the susceptibility of the Negro to disease is another very potent reason for segregation laws. The Negro’s manner of living since his emancipation—irregular in every way, sometimes half-starved—together with their immoral habits, have so weakened the constitutions of a great part of them that they easily become victims to disease. According to the _Washington Post_ (March 3, 1917) of 20,000 Negroes who had lately arrived in Philadelphia from the South 1000 were ill with pneumonia and tuberculosis, of whom 700 were said to be dying. The “Negro Year Book” for 1914-15 makes the statement that 450,000 Negroes in the South are seriously ill all the time, and that 600,000 of the present Negro population will die of tuberculosis. When one recalls that thirty-five years ago tuberculosis among Negroes was scarcely heard of, he may the better appreciate the full force of the above statement in regard to tuberculosis among Negroes. In a letter calling a conference in Baltimore to consider better housing conditions for the Negro, Mayor Preston said: