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CONTENTS. 
Introduction Page 1-5 
PART i. 
ON THE DESCENT OF MAN. 
CHAPTER I. 
The Evidence of the Descent of man from some 
Lower Form. 
Nature of the evidence bearing on the origin of man— Homologous 
structures in man and the lower animals— Miscellaneous points 
of correspondence — Development — Rudimentary structures, 
muscles, sense-organs, hair, hones, reproductive organs, &c.- — 
The hearing of these three great classes of facts on the origin of 
man .. 9-33 
CHAPTER II. 
Comparison of the Mental Powers of Man and the 
Lower Animals. 
The difference in mental power between the highest ape and the 
lowest savage, immense — Certain instincts in common — The 
emotions— Curiosity — Imitation —Attention— Memory— Ima- 
gination — Reason — Progressive improvement — Tools and 
weapons used hy animals — Language — Self-consciousness — 
Sense of beauty— Belief in God, spiritual agencies, superstitions 
34-69 
CHAPTER III. 
Comparison of the Mental Powers of Man and the 
Lower Animals— continued . 
The moral sense— Fundamental proposition— The qualities of social 
animals — Origin of sociability— Struggle between opposed in- 
stincts — Man a social animal — -The more enduring social instincts 
