General. Lumping Revisited: Global Environmental Changes (J. Wei). Kinetic Lumping of Multicomponent Mixtures. The Mathematics of Continuous Mixtures (R. Aris). Lumping of Discrete Kinetic Systems (K.B. Bischoff, A. Nigam, M.T. Klein). A General Analysis of Lumping in Chemical Kinetics (G. Li, R. Rabitz). An Analysis of Lumping Bimolecular Reactions (B.Z. Li, T.C. Ho). Continuous Kinetics of Bimolecular Sytems (R. Scaramella, P. Cicarrelli, G. Astarita). An Industrial Viewpoint on Lumping (F.J. Krambeck). Modeling of the Kinetics of Complex Processes Based Upon Elementary Steps (E. Vynckier, G.F. Froment). Structural Models of Catalytic Cracking Chemistry (D.T. Allen). Reconciliation of Molecular Detail and Lumping: An Asphaltene Thermolysis Example (A. Nigam, M. Neurock, M.T. Klein). Lumping Parallel Reactions (R. Ocone, G. Astarita). Thermodynamic Lumping of Multicomponent Mixtures. Continuous Thermodynamics for Phase-Equilibrium Calculations in Chemical Process Design (R.L. Cotterman, J.M. Prausnitz). Kinetics and Equilibrium of the Polymerization of Benzene Series Polycyclic Aromatic Hydrocarbons in a Flame (R.A. Alberty). A Free Energy Criterion for the Selection of Pseudocomponents for Vapour/Liquid Equilibrium Calculations (A.G. Schlijper, A.R.D. van Bergen). Continuous Phase Equilibrium Thermodynamics for Sequential Operations (M.A. Matthews, K.C. Mani, H.W. Haynes, Jr.). Continuous Mixture Model Applied to the Viscosity of Hydrocarbon Mixtures (J.A. Lugo, J.G. Briano). A Note on the Method of Moments in the Thermodynamics of Continuous Mixtures (S.I. Sandler, M.C. Libby). Subject Index.