A series of world's congresses in all departments of thought are a feature during the Exposition season. This work is divided into seventeen great departments, as follows: Agriculture, Art, Commerce andFinance, Education, Engineering, Government, Literature, Labor, Medicine, Moral and Social Reform, Music, Public Press, Religion, Science and Philosophy, Temperance, Sunday Rest, and a General Department, embracing congresses not otherwise assigned. These general departments have been divided into more than one hundred divisions, in each of which a congress is to be held. Each division has its own local committee of arrangements.

Representative men from all parts of the world take part in these gatherings. They assemble for the most part in the Art Institute. The officers of the Auxiliary are Charles C. Bonney, President; Thomas B. Bryan, Vice-President; Lyman J. Gage, Treasurer; Benjamin Butter-worth, Secretary.