A strong effort was made by the Organizing Committee to secure the attendance of an audience which should not only in its proportions be complimentary to the eminence of the speakers, but also be thoroughly appreciative of the addresses and conversant with the topic under discussion. Letters were therefore sent to all of the prominent scientific societies in the United States, asking that wherever possible the meetings of the society be set for the Congress week in St. Louis, and wherever this was not possible that the societies send special delegates to attend the Congress, and urge their membership to make an effort to be present. Personal letters were also sent to the leading members of the different professions and sciences, to the faculties of universities and colleges, urging them to attend, and pointing out the necessity of the support of the American scientific public. Special invitations were also sent in the name of the Organizing Committee to the leading authorities of the various subjects under discussion in the Congress, asking them to contribute a ten-minute paper to any section in which they were particularly interested. The result of this careful campaign, in addition to the general exploitation which the Congress received, was such a flattering attendance of American scientists, as to be both a compliment to the European speakers and a benefit to scientific thought. Many societies, such as the American Neurological Association, American Philological Association, American Mathematical Society, Physical and Chemical Societies of America, American Astronomical Society, Germanic Congress, American Electro-Therapeutic Association, held their annual meetings during the week of the Congress, although the date rendered it impossible for the majority of the associations to meet at that time. The eighth International Geographic Congress adjourned from Washington to St. Louis to meet with the Congress of Arts and Science. In response to the special invitations, two hundred forty-seven ten-minute addresses were promised and one hundred two actually read. RECEPTION OF FOREIGN GUESTS Every effort was made by the Department of Congresses to assist the foreign speakers in their traveling arrangements and to make matters as easy and comfortable as possible. A letter of advice was mailed to each speaker prior to his departure, carefully setting forth the conditions of American travel, routes to be followed, reception committees to be met, and other essential details. The official badge of the Congress was also mailed, so that those wearing them might be easily identified by the reception committees both in New York and St. Louis. Nine tenths of the speakers came by the way of New York, and in order to facilitate the clearance of their baggage and to provide for their fitting entertainment in New York, a special reception committee was formed composed of the following members:--