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On the Variation of Species, with Especial Reference to the Insecta
Thomas Vernon Wollaston
Thomas Vernon Wollaston studied beetles closely enough to see species bending under climate, altitude and circumstance. This careful work sets out the fact of variation, its causes, and what it means for how species form. An entomologist's contribution to the great evolutionary debate. Watch species shift before your eyes in the insect world.
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22 chapters
- 1ON THE VARIATION OF SPECIES WITH ESPECIAL REFERENCE TO THE INSECTA; FOLLOWED BY AN INQUIRY INTO THE NATURE OF GENERA.
- 2PREFACE.
- 3CONTENTS.
- 4CORRIGENDUM.
- 5CHAPTER I. INTRODUCTORY REMARKS.
- 6CHAPTER II. FACT OF VARIATION.
- 7FOOTNOTES:
- 8CHAPTER III. CAUSES OF VARIATION.
- 9§ I. Climatal causes generally, whether dependent on latitude or altitude.
- 10§ II. Temporary heat or cold, of an unusual degree.
- 11§ III. Nature of the country and of the soil.
- 12§ IV. Isolation; and exposure to a stormy atmosphere.
- 13FOOTNOTES:
- 14CHAPTER IV. ORGANS AND CHARACTERS OF VARIATION.
- 15FOOTNOTES:
- 16CHAPTER V. GEOLOGICAL REFLECTIONS.
- 17FOOTNOTES:
- 18CHAPTER VI. THE GENERIC THEORY.
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