I. Bergson's Biological Theory of Knowledge.- 1. The Classical Biological Theory of Knowledge: Herbert Spencer.- 2. The Intermediate Stage: Helmholtz, Mach and Poincare.- 3. Bergson's Amendment of the Classical Biological Theory of Knowledge.- 4. Why Mechanical-Pictorial Models Failed.- 5. The Contrast Between Technical Control and Intellectual Insight: The Persistent Influence of Macroscopic Imagery.- 6. Limitations of Panmathematism.- 7. Negative aspects of Bergson's Epistemology - Its Relations to Bachelard, Bridgman and Empirio-Criticism.- 8. Bergson, Reichenbach and Piaget.- 9. Logic of Solid Bodies from Plato to Quine.- II. Bergson's Theory of Duration.- 1. The Meaning of Immediacy.- 2. Content of the Bergsonian Intuition.- 3. The Dynamic Continuity of Duration.- 4. The Incompleteness of Duration: Novelty and its Denials.- 5. Superfluity of Succession in the Deterministic Schemes.- 6. The Leibniz-Fouille Argument for the Compatibility of Succession and Determinism.- 7. The Heterogeneity of Duration: Lovejoy-Ushenko's Objections.- 8. The Deeper Meaning of the 'Indivisible Heterogeneity' of Duration.- 9. The Unreality of Durationless Instants: Becoming Not MatheMatically Continuous.- 10. The Inadequacy of the Atomistic Theory of Time.- 11. The Unity and Multiplicity of Duration: Bergson, Russell and Brouwer.- 12. Immortality of the Past: Bergson and Whitehead.- 13. James's and Bergson's Views of the Past Compared.- 14. The Irreversibility of Duration: The Comments of Royce and Ingarden.- 15. Duration as Concrete Universal. Bergson and Croce.- 16. An Outline of Bergon's Philosophy of Mathematics.- III. Bergson's Theory of the Physical World and its Relations to Contemporary Physics.- 1. The Reality of Duration in the Physical World and its Implications.- 2. Different Degrees of Temporal Span. Microcosmos as Micro-chronos.- 3. Two Fundamental Questions.- 4. The Rejection of the Cartesian Dogma of the Completely Extensionless Mind.- 5. The Correlation of Different Temporal Rhythms with Different Degrees of Extension.- 6. Juxtaposition as the Ideal Limit of Distended Duration.- 7. The Negation of Instantaneous Space in the Relativistic Physics.- 8. Bergson and Einstein. The Physical World as Extensive Becoming.- 9. Limitations and Usefulness of the Corpuscular Models.- 10. Change without Vehicle and Container. Fallacy of Simple Location.- 11. Limits of the Criticism of Simple Location: Contemporary Independence.- 12. The Indeterminacy of Microphysical Events. Bergson and Boutroux.- 13. Bergson and Louis De Broglie.- 14. Physical Events as Proto-Mental Entities. Bergson, White-head and Bohm.- 15 The Significance and the Limitations of Auditory Models. Bergson and Strawson.- 16. Concluding Remarks: the World of Laplace and the World of Bergson.- Appendix I. Russell's Hidden Bergsonism.- Appendix II. Microphysical Indeterminacy and Free-Dom. Bergson and Peirce.- Appendix III. Bergson's Thoughts on Entropy and Cosmogony.- Additional Selected Bibliography.- Extract from Bergson's Letter.- Index of Names and Subjects.