An essay on the origin of language, based on modern researches, and especially on the works of M. Renan

Language: An Introduction to the Study of Speech

Renan, Taine, Michelet: Les maîtres de l'histoire

The Internet and Languages [around the year 2000]

Souvenirs d'enfance et de jeunesse

Lectures on the Science of Language

Della illustrazione delle lingue antiche e moderne e principalmente dell'italiana procurata nel secolo XVIII. dagli Italiani - Parte II

Opuscula: Essays chiefly Philological and Ethnographical

Duality of Voice

Introduction to the study of the history of language

La terre du passé

Primitive culture, vol. 2 (of 2)