CONTENTS.
Reading edition
CHAPTER I. Page
Introductory Remarks1
CHAPTER II.
Fact of Variation7 As a matter of experience 8 As probable from analogy 10
CHAPTER III.
Causes of Variation19 § 1. Climatal causes generally (whether dependent upon latitude or upon altitude) 23 § 2. Temporary heat or cold, of an unusual degree 42 § 3. Nature of the country, and of the soil 46 § 4. Isolation; and exposure to a stormy atmosphere 70
CHAPTER IV.
Organs and Characters of Variation95
CHAPTER V.
Geological Reflections111
CHAPTER VI.
The Generic Theory157
CHAPTER VII.
Conclusion181