CONTENTS. 
PAGE 
I. 
The Growth of Evolutionary Thought, . 
. 9 
II. 
Practical Benefits of the Evolution Theory, 
. 12 
III. 
The Four Great Factors of Evolution, 
. 16 
IV. 
Proofs from Geology, .... 
. 19 
V. 
Proofs from Morphology, 
. 21 
VI. 
Proofs from Embryology, 
. 31 
VII. 
Proofs from Metamorphosis, . 
. 34 
VIII. 
Proofs from Rudimentary Organs, . 
. 36 
IX. 
Proofs from Geographical Distribution, . 
. 40 
X. 
Proofs from Discovered Links, 
. 44 
XI. 
Proofs from Artificial Breeding, 
. 52 
XII. 
Proofs from Reversion, . 
. 55 
XIII. 
Proofs from Mimicry,. 
. 58 
XIV. 
Spontaneous Generation,. 
, 60 
XV. 
A Summary of Evidence, . 
. 63 
XVI. 
Language and the Moral Sense, 
, 68 
XVII. 
Conclusion,. 
69 
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