Following is a continuation of the list of titles and authors of the papers presented: Developments in Treatment Technology. By R. Gassett, B. J. Sloan and J. T. O'Rourke. Biological Treatment Techniques: Converting Industrial Waste to Acceptable Outflows. By John W. Liskowitz. Carbon Adsorption. By Daryl Gruenwald. Solid Waste - Municipal Disposal in the Smaller City (A Case Study). By Harold E. Brichford. Safeguarding Against Plant Spills. By L. E. Carlson, J. F. Erdmann and G. J. Hanks Jr. Suppressing Noise in Metalworking Industries. By J. H. Heller. Use of Ozone in Pollution Control. By Eskil L. Karlson and Simon P. Edkins. Odor Control in the Chemical Industry. By Paul N. Cheremisinoff.