官方藏书 / Science_-_Biology / Studies in the Theory of Descent (Volumes 1 and 2)

Studies in the Theory of Descent (Volumes 1 and 2)

August Weismann · Science_-_Biology · 47 章

目录

STUDIES IN THE THEORY OF DESCENT.PREFATORY NOTICE.TRANSLATOR’S PREFACE.PREFACE TO THE ENGLISH EDITION.CONTENTS.Part I. ON THE SEASONAL DIMORPHISM OF BUTTERFLIES.I. The Origin and Significance of Seasonal Dimorphism.II. Seasonal Dimorphism and Climatic Variation.III. Nature of the Causes producing Climatic Varieties.IV. Why all Polygoneutic Species are not Seasonally Dimorphic.V. On Alternation of Generations.VI. General Conclusions.APPENDIX I. EXPERIMENTS.APPENDIX II.Chapter 15 EXPLANATION OF THE PLATES.Part II. ON THE FINAL CAUSES OF TRANSFORMATION.INTRODUCTION.I. Ontogeny and Morphology of Sphinx-Markings.Table of Development of the Species of Deilephila.II. Conclusions from Phylogeny.III. Biological Value of Marking in General.IV. Biological Value of Colour.V. Biological Value of Special Markings.VI. Objections to a Phyletic Vital Force.VII. Phyletic Development of the Markings of the Sphingidæ: Summary and Conclusion.INTRODUCTION.STUDIES IN THE THEORY OF DESCENT I. Larva and Imago vary in Structure independently of each other.II. Does the Form-relationship of the Larva coincide with that of the Imago?III. Incongruences in other Orders of Insects.IV. Summary and Conclusion.APPENDIX I.APPENDIX II.EXPLANATION OF THE PLATES.EXPERIMENTS.Addendum.INTRODUCTION.I. Are the Principles of the Selection Theory Mechanical?II. Mechanism and Teleology.FOOTNOTES Chapter 42 Chapter 43 Chapter 44 INDEX.ERRATA.THE FULL PROJECT GUTENBERG™ LICENSE