Contains: The Darwinian Theory and the Science of language (1863) by August Schleicher, translated from the German by Alexander V. W. Bikkers. On the Significance of Language for the Natural History of Man (1865) by August Schleicher, translated from the German by J. Peter Maher. On the Origin of Language (1867) by Wilhelm H. I. Bleek, edited with a preface by Ernst Haeckel, translated from the German by Thomas Davidson.

Introduction by: J. Peter Maher