IN his presidential address to the Society of Chemical Industry at Cardiff on July 17, Dr. J. T. Dunn referred to the enormous growth of chemical industry since the early days of the Society. From being limited to the alkali industry, the soap industry, brewing and distilling, the metallurgical industries and, to a small extent, the manufacture of dyes it now covers not only great expansions and revolutionary developments in these industries but also the manufacture of synthetic drugs, the cellulose and plastics industries, the gas and coke industries, etc. One of the most potent factors in this change has been the growth of the idea that the chemist should have an authoritative position in regard to the conduct of a chemical industry. The idea that a chemist should be confined to the laboratory has largely passed, and chemists are now concerned not merely with routine testing of supplies and products but also with searching for improvements in processes and new directions for advance. They are as familiar with the details of the works as with the laboratory, and their opinion and advice are sought and regarded.