The Significance of Nonlinearity in the Natural Sciences

Some Recent Developments on Solitons in Two-Dimensional Field Theories.- Path Integral Quantization of Solitons.- Nontopological Solitons.- Vacuum Bubble Instantons.- Nonlinear Deep Water Waves: A Physical Testing Ground for Solitons and Recurrence.- Solitons as Particles, and the Effects of Perturbations.- The Formulation of Variational Principles by Means of Clebsch Potentials.- Coherent Structures in Fluid Dynamics.- Collisionless Multiphoton Dissociation of SF6: A Statistical Thermodynamic Process.- Structure of the Vibrational States in the v3-Fundamental and Its Overtones in SF6 and Multiphoton Absorption Effects.- Review of Rotational Structure in Excited Vibrational States of Spherical-Top Molecules.- Isotope Effects in Molecular Multiquantum Amplitudes.- Spatio-temporal Structuration in Immobilized Enzyme Systems.- Theories and Conjectures on Membrane-Supported Waves and Patterns.- Physical Mechanisms of Nerve Excitability.- Of Trials and Errors (1977 J. Robert Oppenheimer Memorial Price Acceptance Speech).- Participants.- Program.