whole Negro question reduces itself to a study of certain slum districts. His mind reverts to Seventh and Lombard streets and to Twelfth and Kater streets of to-day, or to St. Mary's in the past. Continued and widely known charitable work in these sections makes the problem of poverty familiar to him; bold and daring crime too often traced to these centres has called his attention to a problem of crime, while the scores of loafers, idlers and prostitutes who crowd the sidewalks here night and day remind him of a problem of work.
All this is true—all these problems are there and of threatening intricacy; unfortunately, however, the interest of the ordinary man of affairs is apt to stop here. Crime, poverty and idleness affect his interests unfavorably and he would have them stopped; he looks upon these slums and slum characters as unpleasant things which should in some way be removed for the best interests of all. The social student agrees with him so far, but must point out that the removal of unpleasant features from our complicated modern life is a delicate operation requiring knowledge and skill; that a slum is not a simple fact, it is a symptom and that to know the removable causes of the Negro slums of Philadelphia requires a study that takes one far beyond the slum districts. For few Philadelphians realize how the Negro population has grown and spread. There was a time in the memory of living men when a small district near Sixth and Lombard streets comprehended the great mass of the Negro population of the city. This is no longer so. Very early the stream of the black population started northward, but the increased foreign immigration of 1830 and later turned it back. It started south also but was checked by poor houses and worse police protection. Finally with gathered momentum the emigration from the slums started west, rolling on slowly and surely, taking Lombard street as its main thoroughfare, gaining early foothold in West Philadelphia,
