| Preface | p. ix |
| Biology and Its Philosophy | p. 2 |
| The Rise of Logical Positivism | p. 2 |
| The Consequences for Philosophy | p. 4 |
| Problems of Falsifiability | p. 6 |
| Philosophy of Science Without Positivism | p. 8 |
| Speculation and Science | p. 10 |
| Introduction to the Literature | p. 11 |
| Autonomy and Provincialism | p. 13 |
| Philosophical Agendas versus Biological Agendas | p. 13 |
| Motives for Provincialism and Autonomy | p. 18 |
| Biological Philosophies | p. 21 |
| Tertium Datur? | p. 25 |
| The Issues in Dispute | p. 30 |
| Steps in the Argument | p. 34 |
| Introduction to the Literature | p. 35 |
| Teleology and the Roots of Autonomy | p. 37 |
| Functional Explanations in Molecular Biology | p. 39 |
| The Search for Functions | p. 43 |
| Functional Laws | p. 47 |
| Directively Organized Systems | p. 52 |
| The Autonomy of Teleological Laws | p. 59 |
| The Metaphysics and Epistemology of Functional Explanation | p. 62 |
| Functional Explanation Will Always Be with Us | p. 65 |
| Introduction to the Literature | p. 67 |
| Reductionism and the Temptation of Provincialism | p. 69 |
| Motives for Reductionism | p. 69 |
| A Triumph of Reductionism | p. 73 |
| Reductionism and Recombinant DNA | p. 84 |
| Antireductionism and Molecular Genetics | p. 88 |
| Mendel's Genes and Benzer's Cistrons | p. 93 |
| Reduction Obstructed | p. 97 |
| Qualifying Reductionism | p. 106 |
| The Supervenience of Mendelian Genetics | p. 11 |
| Levels of Organization | p. 117 |
| Introduction to the Literature | p. 119 |
| The Structure of Evolutionary Theory | p. 121 |
| Is There an Evolutionary Theory? | p. 122 |
| The Charge of Tautology | p. 126 |
| Population Genetics and Evolution | p. 130 |
| Williams's Axiomatization of Evolutionary Theory | p. 136 |
| Adequacy of the Axiomatization | p. 144 |
| Introduction to the Literature | p. 152 |
| Fitness | p. 154 |
| Fitness Is Measured by Its Effects | p. 154 |
| Fitness As a Statistical Propensity | p. 160 |
| The Supervenience of Fitness | p. 164 |
| The Evidence for Evolution | p. 169 |
| The Scientific Context of Evolutionary Theory | p. 174 |
| Introduction to the Literature | p. 179 |
| Species | p. 180 |
| Operationalism and Theory in Taxonomy | p. 182 |
| Essentialism--For and Against | p. 187 |
| The Biological Species Notion | p. 191 |
| Evolutionary and Ecological Species | p. 197 |
| Species Are Not Natural Kinds | p. 201 |
| Species As Individuals | p. 204 |
| The Theoretical Hierarchy of Biology | p. 212 |
| The Statistical Character of Evolutionary Theory | p. 216 |
| Universal Theories and Case Studies | p. 219 |
| Introduction to the Literature | p. 225 |
| New Problems of Functionalism | p. 226 |
| Functionalism in Molecular Biology | p. 228 |
| The Panglossian Paradigm | p. 235 |
| Aptations, Exaptations, and Adaptations | p. 243 |
| Information and Action Among the Macromolecules | p. 246 |
| Metaphors and Molecules | p. 255 |
| Bibliography | p. 266 |
| Index | p. 273 |
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