It would seem presumptuous, even after ten years of residence in Porto Rico, to attempt to classify the social problems of the Island and offer suggestions as to their solution, were it not for the fact that this work does not claim to be a complete and final analysis of the situation, but is designed merely to gather up the material available, and present it in such form that it may be made the basis of class-room study. The absence of such a collection of data was a handicap to the author in his work in rural sociology in the University of Porto Rico, and this book represents, in a somewhat abbreviated form, the material covered.