_The Philosophic Grammar of American Languages._
§1. Introduction, p. 3. §2. Humboldt's Studies in American Languages,
p. 4. §3. The Final Purpose of the Philosophy of Language, p. 7.
§4. Historical, Comparative and Philosophic Grammar, p. 9. §5.
Definition and Psychological Origin of Language, p. 10. §6.
Primitive Roots and Grammatical Categories, p. 11. §7. Formal and
Material Elements of Language, p. 13. §8. The Development of
Languages, p. 14. §9. Internal Form of Languages, p. 16. §10.
Criteria of Rank in Languages, p. 17. §11. Classification of
Languages, p. 21. §12. Nature of Incorporation, p. 22. §13.
Psychological Origin of Incorporation, p. 24. §14. Effect of
Incorporation on Compound Sentences, p. 25. §15. The Dual in
American Languages, p. 27. §16. Humboldt's Essay on the American
Verb, p. 28.
_On the Verb in American Languages. By Wilhelm von Humboldt, p. 29._
Verbal forms classified as they indicate the notion of Being: