259.    BIRCH, S. F., WITHERS, J. G., NARRACOTT, E. S., AND HABESHAW, J.  Miscellaneous Information on Fuels, Detergents, and Lubricants.  BIOS Final Rept. 1646, 1946, 160 pp., PB 91,685.

                  Gives general notes on the Michael hot-gas recycle and the foam processes, the Ruhrchemie method of olefin analysis, description with diagram of a Kaiser Willhelm Institute capillary flowmeter for measuring gas flows at high pressures, and some discussion of Rheinpreussen Fe catalysts of composition 100% Fe, 1.7% Cu, 0.1-2% K₂CO₃, and 50-100% kieselguhr.  The Oxo reaction is also discussed, and a translation of a report by Dr. Nienburg on its development is given.  Also gives considerable space to lubricants and lubricating-oil additives.  An appendix offers a report of 30 pp. by Dr. Sachsse on the explosive limits and flame velocities in hydrocarbon-oxygen mixtures.