Studies in the Theory of Descent (Volumes 1 and 2)
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STUDIES IN THE THEORY OF DESCENT.
PREFATORY NOTICE.
TRANSLATOR’S PREFACE.
PREFACE TO THE ENGLISH EDITION.
CONTENTS.
STUDIES IN THE THEORY OF DESCENT.
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.
EXPLANATION OF THE PLATES.
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.
EXPLANATION OF THE PLATES.
STUDIES IN THE THEORY OF DESCENT.
Part II. ON THE FINAL CAUSES OF TRANSFORMATION.
I. THE ORIGIN OF THE MARKINGS OF CATERPILLARS.
INTRODUCTION.
I. Ontogeny and Morphology of Sphinx-Markings.
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.
I. Ontogeny and Morphology of Sphinx-Markings.
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.
II. ON PHYLETIC PARALLELISM IN METAMORPHIC SPECIES.
INTRODUCTION.
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.
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.
STUDIES IN THE THEORY OF DESCENT.
Part III. ON THE FINAL CAUSES OF TRANSFORMATION.
III. THE TRANSFORMATION OF THE MEXICAN AXOLOTL INTO AMBLYSTOMA.
INTRODUCTION.
EXPERIMENTS.
Postscript.
Addendum.
INTRODUCTION.
EXPERIMENTS.
Postscript.
Addendum.
IV. ON THE MECHANICAL CONCEPTION OF NATURE.
INTRODUCTION.
I. Are the Principles of the Selection Theory Mechanical?
II. Mechanism and Teleology.
INTRODUCTION.
I. Are the Principles of the Selection Theory Mechanical?
II. Mechanism and Teleology.
FOOTNOTES
INDEX.
ERRATA.
Transcriber’s Notes
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