- 1A Prefatory Letter
- 2I — On the Advisableness of Improving Natural Knowledge
- 3II — Emancipation — Black and White
- 4III — A Liberal Education: And Where to Find It
- 5IV — Scientific Education: Notes of an After-Dinner Speech
- 6V — On the Educational Value of the Natural History Sciences
- 7VI — On the Study of Zoology
- 8VII — On the Physical Basis of Life
- 9VIII — The Scientific Aspects of Positivism
- 10IX — On a Piece of Chalk
- 11X — Geological Contemporaneity and Persistent Types of Life
- 12XI — Geological Reform
- 13XII — The Origin of Species
- 14XIII — Criticisms on “The Origin of Species”
- 15XIV — On Descartes’ “Discourse Touching the Method of Using One’s R…
Lay Sermons, Addresses and Reviews
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