It was determined by the Administrative Board to keep the services of three of the members of the Committee on Plan and Scope, who should act as a scientific organizing committee and who should also be the presiding officers of the Congress. The choice for President of the Congress fell without debate to the dean of American scientific circles, whose eminent services to the Government of the United States and whose recognized position in foreign and domestic scientific circles made him particularly fitted to preside over such an international gathering of the leading scientists of the world, Dr. Simon Newcomb, retired Professor of Mathematics, United States Navy. Professor Hugo Münsterberg, of Harvard University, and Professor Albion W. Small, of the University of Chicago, were designated as the first and second Vice-Presidents respectively. The work of the succeeding spring, with both the Organizing Committee and the Administrative Board, was devoted to the perfecting of the programme and the selection of foreign scientists to be invited to participate in the Congress. The theory of the development of the programme and its logical bases are fully and forcibly treated by Professor Münsterberg in the succeeding chapter, and therefore will not be touched upon in this record of facts. As an illustration of the growth of the programme, however, it is interesting to compare its form, which was adopted at the next meeting of the Organizing Committee on February 23, 1903, in New York City, with its final form as given in the completed programme presented at St. Louis in September, 1904 (pp. 47-49). No better illustration can be given of the immense amount of labor and painstaking adjustment, both to scientific and to physical conditions, and of the admirable adaptability of the original plan to the exigencies of actual practice. At the meeting of February 23, 1903, which was attended by all of the members of the Organizing Committee and by President Butler of the Administrative Board, it was determined that the number of Departments should be sixteen, with the following designations:-- A. NORMATIVE SCIENCES 1. Philosophical Sciences. 2. Mathematical Sciences. B. HISTORICAL SCIENCES 3. Political Sciences. 4. Legal Sciences. 5. Economic Sciences. 6. Philological Sciences. 7. Pedagogical Sciences. 8. Æsthetic Sciences. 9. Theological Sciences. C. PHYSICAL SCIENCES 10. General Physical Sciences. 11. Astronomical Sciences. 12. Geological Sciences. 13. Biological Sciences. 14. Anthropological Sciences. D. MENTAL SCIENCES 15. Psychological Sciences. 16. Sociological Sciences. SECTIONS 1. _a_ Metaphysics. _b_ Logic. _c_ Ethics. _d_ Æsthetics. 2. _a_ Algebra. _b_ Geometry. _c_ Statistical Methods.