Writings on Mexican languages, 1895-1902
- Las lenguas habladas por los indigenos de la Republica Mexicana
- An exposition on Mexican languages emphasizing the relationship of languages of Lower California to the Klamath; also Mixe, Zoque, Chontal, and Chocho, the last at greater length, including vocabulary and grammar explained in Spanish. Incomplete. This was prepared for, but not delivered at, the International Congress of Americanists, 11th session, 1895.