Biology
The problem of the genesis of species stated.--Nature of its probable solution.--Importance of the question.--Position here defended.--Statement of the DARWINIAN THEORY.--Its applicability to details of geographical distribution; to rudimentary structures; to homology; to mimi...
Prejudiced opinions on the subject.--"Creation" sometimes denied from prejudice.---The unknowable.--Mr. Herbert Spencer's objections to theism; to creation.--Meanings of term "c...
14. Chapter 14Mr. Darwin supposes that natural selection acts by slight variations.--These must be useful at once.--Difficulties as to the giraffe; as to mimicry; as to the heads of flat-fish...
15. Chapter 15Chances against concordant variations.--Examples of discordant ones.--Concordant variations not unlikely on a non-Darwinian evolutionary hypothesis.--Placental and implacental m...
20. Chapter 20Animals made-up of parts mutually related in various ways.--What homology is.--Its various kinds.--Serial homology.--Lateral homology.--Vertical homology.--Mr. Herbert Spencer's...
23. Chapter 23Review of the statements and arguments of preceding chapters.--Cumulative argument against predominant action of "Natural Selection."--Whether anything positive as well as negat...
21. Chapter 21The origin of morals an inquiry not foreign to the subject of this book.--Modern utilitarian view as to that origin.--Mr. Darwin's speculation as to the origin of the abhorrence...
13. Chapter 13The problem of the genesis of species stated.--Nature of its probable solution.--Importance of the question.--Position here defended.--Statement of the DARWINIAN THEORY.--Its ap...
17. Chapter 17What is meant by the phrase "specific stability;" such stability to be expected _a priori_, or else considerable changes at once.--Rapidly increasing difficulty of intensifying...
18. Chapter 18Two relations of species to time.--No evidence of past existence of minutely intermediate forms when such might be expected _a priori_.--Bats, Pterodactyles, Dinosauria, and Bir...
16. Chapter 16There are difficulties as to minute modifications, even if not fortuitous.--Examples of sudden and considerable modifications of different kinds.--Professor Owen's view.--Mr. Wa...
22. Chapter 22A provisional hypothesis supplementing "Natural Selection."--Statement of the hypothesis.--Difficulty as to multitude of gemmules.--As to certain modes of reproduction.--As to f...
19. Chapter 19The geographical distribution of animals presents difficulties.--These not insurmountable in themselves; harmonize with other difficulties.--Fresh-water fishes.--Forms common to...
12. Chapter 12Prejudiced opinions on the subject.--"Creation" sometimes denied from prejudice.--The unknowable.--Mr. Herbert Spencer's objections to theism; to creation.--Meanings of term "cr...
9. Chapter 9The origin of morals an inquiry not foreign to the subject of this book.--Modern utilitarian view as to that origin.--Mr. Darwin's speculation as to the origin of the abhorrence...
2. Chapter 2Mr. Darwin supposes that Natural-Selection acts by slight variations.--These must be useful at once.--Difficulties as to the giraffe; as to mimicry; as to the heads of flat-fish...
5. Chapter 5What is meant by the phrase "specific stability;" such stability to be expected _a priori_, or else considerable changes at once.--Rapidly increasing difficulty of intensifying...
1. Chapter 1The problem of the genesis of species stated.--Nature of its probable solution.--Importance of the question.--Position here defended.--Statement of the DARWINIAN THEORY.--Its ap...
6. Chapter 6Two relations of species to time.--No evidence of past existence of minutely intermediate forms when such might be expected _a priori_.--Bats, Pterodactyles, Dinosauria, and Bir...
7. Chapter 7The geographical distribution of animals presents difficulties.--These not insurmountable in themselves; harmonize with other difficulties.--Fresh-water fishes.--Forms common to...
11. Chapter 11Review of the statements and arguments of preceding chapters.--Cumulative argument against predominant action of "Natural Selection."--Whether anything positive as well as negat...
3. Chapter 3Chances against concordant variations.--Examples of discordant ones.--Concordant variations not unlikely on a non-Darwinian evolutionary hypothesis.--Placental and implacental m...
8. Chapter 8Animals made up of parts mutually related in various ways.--What homology is.--Its various kinds.--Serial homology.--Lateral homology.--Vertical homology.--Mr. Herbert Spencer's...
10. Chapter 10A provisional hypothesis supplementing "Natural Selection."--Statement of the hypothesis.--Difficulty as to multitude of gemmules.--As to certain modes of reproduction.--As to f...
4. Chapter 4There are difficulties as to minute modifications, even if not fortuitous.--Examples of sudden and considerable modifications of different kinds.--Professor Owen's view.--Mr. Wa...