Preface; 1. Introductory lecture: new materials for the science of language, and new theories; 2. Language and reason; 3. The physiological alphabet; 4. Phonetic change; 5. Grimm's law; 6. On the principles of etymology; 7. On the powers of roots; 8. Metaphor; 9. The mythology of the Greeks; 10. Jupiter, the supreme Aryan god; 11. Myths of the dawn; 12. Modern mythology; Index.
Published 1861-4, these two volumes of lectures on philological topics, reprinted multiple times, enthused Victorian readers, including George Eliot.