SCIENTIFIC AND INDUSTRIAL SOCIETIES: Division of Industrial Chemists and Chemical Engineers of the American Chemical Society; American Chemical Society. Division of Fertilizer Chemists; Co-operative Work on Phosphoric Acid by the Division of Fertilizer Chemists of the American Chemical Society, 1910; American Chemical Society, Division of Fertilizer Chemists. Potash Committee Work for December Meeting, 1910; Report of the Committee on Fertilizer Legislation of the Division of the Fertilizer Chemists of the American Chemical Society; Report of the Committee on Phosphate Rock; American Chemical Society. Division of Pharmaceutical Chemists; Abstract of Report of the Committee on Quantitative Methods; American Institute of Chemical Engineers; Western Society of Technical Chemists and Metallurgists