Report of Committee on Maintenance, B. C. TINEY; Maintenance Costs, H. K. BISHOP (discussion); Pavement Settlement, W. H. ROOT; Fillers and Cushion Courses for Brick and Block Pavements, J. S. CRANDELL (discussion); Design of Concrete Mixture, B. MYERS and M. MORRIS (discussion); Report of Committee on Materials and Construction, H. S. MATTIMORE; Removal of Ice From Pavements, B. C. TINEY (discussion); Determination and Classification of Important Characteristics of Bitumen for Use in Surface Application, Mixed in Place and Similar Surfaces, J. E. MYERS (discussion); Developments in Construction Methods and Appliances, F. H. JACKSON (discussion); Report of Committee on Correlation of Research in Mineral Aggregates, W. J. EMMONS; Flat and Elongated Particles in Mineral Aggregates, S. WALKER; Relation Between Durability of Concrete and Durability of Aggregate, F. H. JACKSON (discussion); Durability of Concrete, C. H. SCHOLER (discussion); Report of Committee on Design, A. T. GOLDBECK; Report of Committee on Traffic, G. E. HAMLIN; Traffic Control Mechanisms, M. McCLINTOCK (discussion); Traffic Capacity, A. N. JOHNSON (discussion); Financial Responsibility, N. W. DOUGHERTY; Vehicle and Highway Mechanics as Related to Traffic, H. C. DICKINSON (discussion); Extent of Desirability of State Control of Traffic Regulations in Cities, W. A. VAN DUZER; Traffic Survey Methods and Forms, J. G. McKAY; Law Observance and Enforcement Methods, B. W. MARSH; Accident Prone Driver, S. J. WILLIAMS; Cost Economies in Concrete Bridges, C. B. McCULLOUGH; General Discussion on Traffic, E. W. JAMES, J. R. BIBBINS, F. H. ENO and G. F. SCHLESINGER; Relation of Certain Frost Phenomena to Subgrade, V. R. BURTON and A. C. BENKELMAN (discussion); Report of Committee on Highway Finance, T. H. MacDONALD; Report of Committee on Highway Transportation, T. R. AGG (discussion); Report of Project Committee on Curing of Concrete Pavements, F. C. LANG (discussion). (see also Proceedings of Tenth Annual Meeting of Highway Research Board, National Research Council, 1931, 420 pp., numerous figs.; and Rock Products, vol. 34, no. 2, Jan. 17, 1931, pp. 42-43)