Note 13-* — The Philosophic Grammar of American Languages.
Reading edition
His explanation of inflection is most fully given in his Introductory Essay, Ueber die Verschiedenheit, etc., § 14, Gesammelte Werke, s. 121, sqq. A sharp, but friendly criticism of this central point of his linguistic philosophy may be found in Steinthal, Charakteristik der Hauptsächlichsten Typen des Sprachbones, ss. 58-61. Humboldt certainly appears not only obscure in parts but contradictory.