The Legend of Sir Lancelot du Lac Studies upon its Origin, Development, and Position in the Arthurian Romantic Cycle

Society: Its Origin and Development

The Number Concept_ Its Origin and Development

A Critical Examination of the Position of Mr. Darwin's Work, "On the Origin of Species," in Relation to the Complete Theory of the Causes of the Phenomena of Organic Nature Lecture VI. (of VI.), "Lectures to Working Men", at the Museum of Practical Geolo