![](https://assets.cambridge.org/97811080/53129/cover/9781108053129.jpg)
Book contents
- Frontmatter
- PREFACE
- CONTENTS
- CORRIGENDA
- INTRODUCTION
- PART I MERISTIC VARIATION
- CHAPTER I ARRANGEMENT OF EVIDENCE
- CHAPTER II SEGMENTS OF ARTHROPODA
- CHAPTER III VERTEBRÆ AND RIBS
- CHAPTER IV SPINAL NERVES
- CHAPTER V VARIATION IN ARTHROPODA
- CHAPTER VI CHÆTOPODA, HIRUDINEA AND CESTODA
- CHAPTER VII BRANCHIAL OPENINGS OF CHORDATA AND STRUCTURES IN CONNEXION WITH THEM
- CHAPTER VIII MAMMÆ
- CHAPTER IX TEETH
- CHAPTER X TEETH—RECAPITULATION
- CHAPTER XI MISCELLANEOUS EXAMPLES
- CHAPTER XII COLOUR-MARKINGS
- CHAPTER XIII MINOR SYMMETRIES: DIGITS
- CHAPTER XIV DIGITS: RECAPITULATION
- CHAPTER XV MINOR SYMMETRIES: SEGMENTS IN APPENDAGES
- CHAPTER XVI RADIAL SERIES
- CHAPTER XVII RADIAL SERIES: ECHINODERMATA
- CHAPTER XVIII BILATERAL SERIES
- CHAPTER XIX FURTHER ILLUSTRATIONS OF THE RELATIONSHIP BETWEEN RIGHT AND LEFT SIDES
- CHAPTER XX SUPERNUMERARY APPENDAGES IN SECONDARY SYMMETRY
- CHAPTER XXI APPENDAGES IN SECONDARY SYMMETRY
- CHAPTER XXII DUPLICITY OF APPENDAGES IN ARTHROPODA
- CHAPTER XXIII SECONDARY SYMMETRY IN VERTEBRATES. REMARKS ON THE SIGNIFICANCE OF REPETITION IN SECONDARY SYMMETRY: UNITS OF REPE-TITION
- CHAPTER XXIV DOUBLE MONSTERS
- CHAPTER XXV CONCLUDING REFLEXIONS
- INDEX OF SUBJECTS
- INDEX OF PERSONS
CHAPTER IV - SPINAL NERVES
Published online by Cambridge University Press: 05 May 2013
- Frontmatter
- PREFACE
- CONTENTS
- CORRIGENDA
- INTRODUCTION
- PART I MERISTIC VARIATION
- CHAPTER I ARRANGEMENT OF EVIDENCE
- CHAPTER II SEGMENTS OF ARTHROPODA
- CHAPTER III VERTEBRÆ AND RIBS
- CHAPTER IV SPINAL NERVES
- CHAPTER V VARIATION IN ARTHROPODA
- CHAPTER VI CHÆTOPODA, HIRUDINEA AND CESTODA
- CHAPTER VII BRANCHIAL OPENINGS OF CHORDATA AND STRUCTURES IN CONNEXION WITH THEM
- CHAPTER VIII MAMMÆ
- CHAPTER IX TEETH
- CHAPTER X TEETH—RECAPITULATION
- CHAPTER XI MISCELLANEOUS EXAMPLES
- CHAPTER XII COLOUR-MARKINGS
- CHAPTER XIII MINOR SYMMETRIES: DIGITS
- CHAPTER XIV DIGITS: RECAPITULATION
- CHAPTER XV MINOR SYMMETRIES: SEGMENTS IN APPENDAGES
- CHAPTER XVI RADIAL SERIES
- CHAPTER XVII RADIAL SERIES: ECHINODERMATA
- CHAPTER XVIII BILATERAL SERIES
- CHAPTER XIX FURTHER ILLUSTRATIONS OF THE RELATIONSHIP BETWEEN RIGHT AND LEFT SIDES
- CHAPTER XX SUPERNUMERARY APPENDAGES IN SECONDARY SYMMETRY
- CHAPTER XXI APPENDAGES IN SECONDARY SYMMETRY
- CHAPTER XXII DUPLICITY OF APPENDAGES IN ARTHROPODA
- CHAPTER XXIII SECONDARY SYMMETRY IN VERTEBRATES. REMARKS ON THE SIGNIFICANCE OF REPETITION IN SECONDARY SYMMETRY: UNITS OF REPE-TITION
- CHAPTER XXIV DOUBLE MONSTERS
- CHAPTER XXV CONCLUDING REFLEXIONS
- INDEX OF SUBJECTS
- INDEX OF PERSONS
Summary
![Image of the first page of this content. For PDF version, please use the ‘Save PDF’ preceeding this image.'](https://static.cambridge.org/content/id/urn%3Acambridge.org%3Aid%3Abook%3A9781139382069/resource/name/firstPage-9781139382069c4_p129-145_CBO.jpg)
- Type
- Chapter
- Information
- Materials for the Study of VariationTreated with Especial Regard to Discontinuity in the Origin of Species, pp. 129 - 145Publisher: Cambridge University PressPrint publication year: 2012First published in: 1894