Whilst the greatest effort has been made to ensure the quality of this text, due to the historical nature of this content, in some rare cases there may be minor issues with legibility. I desire to record my obligations to my dear friends; the Hon. Wm. H. Hunt, Governor of Porto Rico, Dr. Samuel mccune Lindsay, Commissioner of Educa tion, Professor Joseph French Johnson and Professor Henry R. Seager, for the careful reading of the manu script, and to Mrs. Morris Jastrow, Jr., and Professor John L. Stewart for the most trying of all tasks - the reading of the proof sheets.