Specialist, Bureau of Education, Department of the Interior, Washington. Will the ten million Negroes now in the United States continue to increase at the 100 per cent rate of the last 50 years? How long will they remain 75 per cent rural? Is the cityward tide affecting them equally with the white population? To what extent are they leaving the South and moving into the North? A moment's re?ection will Show that these are among the most vital questions confronting the serious minded people of our land.