and a world somewhat weary of world fairs is arousing itself to an active interest in the St. Louis Exposition. Of most immediate scientific concern is the Congress of Arts and Sciences, described by Professor Hugo Münsterberg, of Harvard University, in the Atlantic Monthly for May.
Professor Münsterberg tells us that he proposed to substitute for the congeries of international congresses which have formed a part of recent world fairs a single congress demonstrating the unity of human knowledge, and that his plan has been adopted in all its details. There will doubtless be
some protest against the scheme from men of science, as it is difficult to draw the line between demonstrating the unity of knowledge and illustrating the tenets of Professor Münsterberg's system of philosophy. The catalogue of Harvard University or the names of our national scientific societies would give a more objective classification of the sciences.
Professor Münsterberg divides the sciences into seven groups, of which four are theoretical and three practical. The theoretical sciences are normative (philosophy and mathematics), historical (which do not deal with the
