THE science of chemistry has some 20,000 adherents at least. Chemical journals are very numerous, and it would be impossible for any one man to read current chemical literature, were he to read for twenty-four hours a day. The investigations of chemists are published, for the most part, in transactions of chemical societies, and until recently these societies lived apart, having merely a bowing acquaintance with one another. “Union is strength,” and in default of union, cooperation lends a strengthening hand. Hence a proposal which originated in the winter of 1910–11 with Profs. Ostwald and Haller to form an association of chemical societies was regarded with favour by the three great chemical societies of London, Berlin, and Paris.