I have referred to the way in which I tried and, to a reasonable extent, succeeded in confining my observations to a certain definite point of view. Aside from this I had certain other advantages upon this expedition in finding what I wanted to see and avoiding the things I did not want to see, without which I certainly could neither have covered the ground I did, nor have found my way to so many things that had for me special and peculiar interest. Some years ago I made the acquaintance, in Boston, of Dr. Robert E. Park, who has for some time past assisted me in my work at Tuskegee. At the time I first met him Doctor Park was interested in the movement to bring about a reform of the conditions then existing in the Congo Free State in Africa; in fact, he was at that time secretary of the Congo Reform Association, and it was through his efforts to interest me in that movement that I came to know him. He had a notion, as he explained to me, that the conditions of the natives in the Congo, as well as in other parts of Africa, could not be permanently improved only through a system of education, somewhat similar to that at Hampton and Tuskegee. The Congo Reform Association, as he explained, was engaged in a work of destruction, but what interested him chiefly was what should be done in the way of construction or reconstruction after the work of destruction was completed. We had frequent conversations upon the subject, and it was in this way that he finally became interested in the work that was being done for the Negro in the Southern States. Since that time he has spent the larger part of every year in the South, assisting me in my work at Tuskegee and using the opportunity thus offered to study what is called the Negro problem. The reason I make this statement here is because Doctor Park was not only my companion in all of my trip through Europe, but he also went to Europe some months in advance of me and thus had an opportunity to study the situation and make it possible for me to see more in a short space of time than I could otherwise have been able to do. In this and in other ways he has been largely responsible for what appears in this book. For instance, it was Doctor Park who studied out the general plans and details of our trip. He acted, also, not merely as a companion but as a guide and interpreter. He assisted me also in getting hold of the documents and literature in the different countries we visited which enabled me to correct the impressions I had formed on the spot and to supplement them with the facts and statistics in regard to the conditions we had observed.