Ontogeny and Phylogeny

* *1. Prospectus * Part I: Recapitulation *2. The Analogistic Tradition from Anaximander to Bonnet * The Seeds of Recapitulation in Greek Science? * Ontogeny and Phylogeny in the Conflict of and Epigenesis: The Idyll of Charles Bonnet * Appendix: The Revolution in *3. Transcendental Origins, 1793--1860 * Naturphilosophie: An Expression of Developmentalism * Two Leading Recapitulationists among the Naturphilosophen: Oken and Meckel * Oken's Classification of Animals Linear Additions of Organs * J. F. Meckel's Sober Statement of the Same Principles * Serres and the French Transcendentalists * Recapitulation and the Theory of Developmental Arrests * Von Baer's Critique of Recapitulation * The Direction of Development and Classification of Animals * Von Baer and Naturphilosophie: What Is the Universal Direction of Development? * Louis Agassiz and the Threefold Parallelism *4. Evolutionary Triumph, 1859--1900 * Evolutionary Theory and Zoological Practice * Darwin and the Evolution of Von Baer' Laws * Evolution and the Mechanics of Recapitulation * Ernst Haeckel: Phylogeny as the Mechanical Cause of Ontogeny * The Mechanism of Recapitulation * The American Neo-Lamarckians: The Law of Acceleration as Evolution's Motor * Progressive Evolution by Acceleration * The Extent of Parallelism * Why Does Recapitulation Dominate the History of Life? * Alpheus Hyatt and Universal Acceleration * Lamarckism and the Memory Analogy * Recapitulation and Darwinism * Appendix: The Evolutionary Translation of von Baer's Laws *5. Pervasive Influence * Criminal Anthropology * Racism * Child Development * Primary Education * Freudian Psychoanalysis * Epilogue *6. Decline, Fall, and Generalization * A Clever Argument * An Empirical Critique * Organs or Ancestors: The Transformation of Haeckel's Heterochrony * Interpolations into Juvenile Stages * Introduction of Juvenile Features into the Adults of Descendants * What Had Become of von Baer's Critique? * Benign Neglect: Recapitulation and the Rise of Experimental Embryology * The Prior Assumptions of Recapitulation * Wilhelm His and His Physiological Embryology: A Preliminary Skirmish * Roux's Entwicklungsmechanik and the Biogenetic Low * Recapitulation and Substantive Issues in Experimental Embryology: The New Preformationism * Mendel's Resurrection, Haeckel's Fall, and the Generalization of Recapitulation * Part II: Heterocrony and Paedomorphosis *7. Heterochrony and the Parallel of Ontogeny and Phylogeny * Acceleration and Retardation * Confusion in and after Haeckel's Wake * Guidelines for a Resolution * The Reduction of de Beer's Categories of Heterochrony to Acceleration and Retardation * A Historical Paradox: The Supposed Dominance of Recapitulation * Dissociability and Heterochrony * Correlation and Disociability * Dissociation of the Three Processes * A Metric for Dissociation * Temporal Shift as a Mechanism of Dissociation * A Clock Model of Heterochrony * Appendix: A Note on the Multivariate Representation of Dissociation *8. The Ecological and Evolutionary Significance of Heterochrony * The Argument from Frequency * The Importance of Recapitulation * The Importance of Heterochronic Change: Selected Cases * Frequency of Paedomorphosis in the Origin of Higher Taxa * A Critique of the Classical Significance of Heterochrony * The Classical Arguments * Retrospective and Immediate Significance * Heterochrony, Ecology, and Life-History Strategies * The Potential Ease and Rapidity of Heterochronic Change * The Control of Metamorphosis in Insects * Amphibian Paedomorphosis and the Thyroid Gland *9. Progenesis and Neoteny Insect Progenesis * Prothetely and Metathetely * Paedogenesis (Parthenogenetic Progenesis) in Gall Midges and Beetles * Progenesis in Wingless, Parthenogenetic Aphids * Additional Cases of Progenesis with a Similar Ecological Basis * Neotenic Solitary Locusts: Are They an Exception to the Rule? * Amphibian Neoteny * The Ecological Determinants of Progenesis * Unstable Environments * Colonization * Parasites * Male Dispersal * Progenesis as an Adaptive Response to Pressures for Small Size * The Role of Heterochrony in Macroevolution: Contrasting Flexibilities for Progenesis and Neoteny * Progenesis * Neoteny * The Social Correlates of Neoteny in Higher Vertebrates *10. Retardation and Neoteny in Human Evolution * The Seeds of Neoteny * The Fetalization Theory of Louis Bolk * Bolk's Data * Bolk's Interpretation * Bolk's Evolutionary Theory * A Tradition of Argument * Retardation in Human Evolution * Morphology in the Matrix of Retardation * Of Enumeration * Of Prototypes * Of Correlation * The Adaptive Significance of Retarded Development *11. Epilogue * Notes * Bibliography * Glossary * Index