Academic
- Lewis Carroll
- Rufus P. Williams
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Man or Matter Introduction to a Spiritual Understanding of Nature on the Basis of Goethe's Method of Training Observation and Thought
Ernst LehrsRead For Free - Thomas Henry Huxley
- Eugene C. Jacobs
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More Letters of Charles Darwin — Volume 2 A Record of His Work in a Series of Hitherto Unpublished Letters
Charles DarwinRead For Free - Magnus Gustaf Mittag-Leffler
- Yazar Bilinmiyor
- William Harmon Norton
- Yazar Bilinmiyor
- Thomas Bulfinch
- Edith A. How
- Grady Ward
- Louis Agassiz
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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 Geology, 1863, on Darwin's Work: "Origin of Species"
Thomas Henry HuxleyRead For Free - Charles Darwin
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- Sir Charles Lyell
- Francis Ritchie
- Walter Grünfeld
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Note on the Resemblances and Differences in the Structure and the Development of the Brain in Man and Apes
Charles DarwinRead For Free - Ernst Haeckel
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Louis Agassiz as a Teacher; illustrative extracts on his method of instruction
Lane CooperRead For Free - Samuel Vaknin
- William Youatt

