The Philosophic Grammar of American Languages, as Set Forth by Wilhelm von Humboldt / With the Translation of an Unpublished Memoir by Him on / the American Verb

The Biology, Physiology and Sociology of Reproduction / Also Sexual Hygiene with Special Reference to the Male

Text Book of Biology, Part 1: Vertebrata

The Blue Book of Chess / Teaching the Rudiments of the Game, and Giving an Analysis of All the Recognized Openings

Christianity and Greek Philosophy / or, the relation between spontaneous and reflective thought / in Greece and the positive teaching of Christ and His / Apostles

Language / An Introduction to the Study of Speech

A History of Indian Philosophy, Volume 1

The World's Greatest Books — Volume 11 — Ancient and Mediæval History

Anglo-Saxon Grammar and Exercise Book / with Inflections, Syntax, Selections for Reading, and Glossary

International Language / Past, Present and Future: With Specimens of Esperanto and Grammar

The Will to Doubt / An essay in philosophy for the general thinker