In this brief study the author covers the topic of the variation in the shape of bone remains found in the Valley of Mexico. The work lays out problems related to these variations, and if they are associated with race, sex ...

Having the conception of a common origin to all the native languages in America, in this essay the author proposes a deep and systematic research of the relations between the languages in our continent. He analyses ...

Introduction, notes, commentaries, and translation to Spanish of twenty hymns consecrated to the Gods, according to the Nahua texts included in Sahagun’s Códices Matritenses. The book contains an appendix were religious ...