Studies in the Theory Of Descent, Volumes I and II

About this eBook

Author

Weismann, August, 1834-1914

Title

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

Credits

Produced by Marilynda Fraser-Cunliffe, Charlie Howard, and the Online Distributed Proofreading Team at www.pgdp.net (This file was produced from images generously made available by The Internet Archive)

Language

English

LoC Class

QL: Science: Zoology

Subject

Mechanism (Philosophy)

Category

Text

eBook-No.

47849

Project Gutenberg

https://www.gutenberg.org/ebooks/47849

Release Date

January 2, 2015

Copyright

Public domain in the USA.

Contents

1. 1.STUDIES IN THE THEORY OF DESCENT.
2. 2.PREFATORY NOTICE.
3. 3.TRANSLATOR’S PREFACE.
4. 4.PREFACE TO THE ENGLISH EDITION.
5. 5.CONTENTS.
6. 6.STUDIES IN THE THEORY OF DESCENT.
7. 7.Part I. ON THE SEASONAL DIMORPHISM OF BUTTERFLIES.
8. 8.I. The Origin and Significance of Seasonal Dimorphism.
9. 9.II. Seasonal Dimorphism and Climatic Variation.
10. 10.III. Nature of the Causes producing Climatic Varieties.
11. 11.IV. Why all Polygoneutic Species are not Seasonally Dimorphic.
12. 12.V. On Alternation of Generations.
13. 13.VI. General Conclusions.
14. 14.APPENDIX I. EXPERIMENTS.
15. 15.APPENDIX II.
16. 16.EXPLANATION OF THE PLATES.
17. 17.STUDIES IN THE THEORY OF DESCENT.
18. 18.Part II. ON THE FINAL CAUSES OF TRANSFORMATION.
19. 19.I. THE ORIGIN OF THE MARKINGS OF CATERPILLARS.
20. 20.INTRODUCTION.
21. 21.I. Ontogeny and Morphology of Sphinx-Markings.
22. 22.II. Conclusions from Phylogeny.
23. 23.III. Biological Value of Marking in General.
24. 24.IV. Biological Value of Colour.
25. 25.V. Biological Value of Special Markings.
26. 26.VI. Objections to a Phyletic Vital Force.
27. 27.VII. Phyletic Development of the Markings of the Sphingidæ: Summary and Conclusion.
28. 28.INTRODUCTION.
29. 29.STUDIES IN THE THEORY OF DESCENT
30. 30.I. Larva and Imago vary in Structure independently of each other.
31. 31.II. Does the Form-relationship of the Larva coincide with that of the Imago?
32. 32.III. Incongruences in other Orders of Insects.
33. 33.IV. Summary and Conclusion.
34. 34.APPENDIX I. 214 Additional Notes on the Ontogeny, Phylogeny, &c., of Caterpillars.
35. 35.APPENDIX II.
36. 36.EXPLANATION OF THE PLATES.
37. 37.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.
38. 38.IV. ON THE MECHANICAL CONCEPTION OF NATURE. — INTRODUCTION.
39. 39.I. Are the Principles of the Selection Theory Mechanical?
40. 40.II. Mechanism and Teleology.
41. 41.FOOTNOTES
42. 42.INDEX.
43. 43.ERRATA.
44. 44.Transcriber’s Notes

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