d, I here give a brief demonstration in a tabular form of the
Origin of Species by means of Natural Selection, referring for the
_facts_ to Mr. Darwin's works, and to the pages in this volume, where
they are more or less fully treated.

_A Demonstration of the Origin of Species by Natural Selection_.

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| | |
|_PROVED FACTS_. |_NECESSARY CONSEQUENCES_ |
| |(_afterwards taken as Proved |
| |Facts_). |
|_________________________________|_________________________________|
| | |
|RAPID INCREASE OF ORGANISMS, | |
|pp. 29, 265; ("Origin |STRUGGLE FOR EXISTENCE, |
|of Species," p. 75, 5th Ed.) |the deaths equalling the |
| |births on the average, p. 30; |
|TOTAL NUMBER OF INDIVIDUALS |("Origin of Species," chap. |
|STATIONARY, pp. 30, |III.) |
|266. | |
|_________________________________|_________________________________|
| | |
|STRUGGLE FOR EXISTENCE. |SURVIVAL OF THE FITTEST, |
| |or Natural Selection; meaning |
|HEREDITY WITH VARIATION, |simply, that on the |
|or general likeness with |whole those die who are |
|individual differences of parents|least fitted to maintain their |
|and offspring, pp. |existence; ("Origin of Species," |
|266, 287-291, 308; ("Origin |chap. IV.) |
|of Species," chap. I., II., V.) | |
|_________________________________|_________________________________|
| | |
|SURVIVAL OF THE FITTEST. |CHANGES OF ORGANIC FORMS, |
| |to keep them in harmony |
|CHANGE OF EXTERNAL CONDITIONS, |with the Changed Conditions; |
|universal and unceasing.--See |and as the changes |