6CHAPTER V. HEREDITY AND THE ORIGIN OF VARIATIONS.
30G
7CHAPTER VI. ORGANIC EVOLUTION.
31H
8Natural Selection.
32I
9Panmixia and Disuse.
33J
10Sexual Selection, or Preferential Mating.
34K
11Use and Disuse.
35L
12The Nature of Variations.
36M
13The Inheritance of Variations.
37N
14The Origin of Variations.
38O
15Summary and Conclusion.
39P
16CHAPTER VII. THE SENSES OF ANIMALS.
40R
17CHAPTER VIII. MENTAL PROCESSES IN MAN.
41S
18CHAPTER IX. MENTAL PROCESSES IN ANIMALS: THEIR POWERS OF PERCEPTION AND INTELLIGENCE.
42T
19CHAPTER X. THE FEELINGS OF ANIMALS: THEIR APPETENCES AND EMOTIONS.
43U
20CHAPTER XI. ANIMAL ACTIVITIES: HABIT AND INSTINCT.
44V
21CHAPTER XII. MENTAL EVOLUTION.: NOTES (pt. 1)
45W
22CHAPTER XII. MENTAL EVOLUTION.: NOTES (pt. 2)
46X
23INDEX.
47Y
24A
48Z
