The Riddle Of The Universe At The Close Of The Nineteenth Century
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Monismus Als Band Zwischen Religion Und Wissenschaft
Glaubensbekenntniss Eines Naturforschers, Vorgetragen Am 9. October 1892 In Altenburg, Beim 75 Jahrigen Jubilaum Der Naturforschenden Gesellschaft Des Osterl... »

The Evolution Of Man
A Popular Exposition Of The Principal Points Of Human Ontogeny And Phylogeny. From The German Of Ernst Haeckel »

Indische Reisebriefe
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Lebenswunder
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Freie Wissenschaft Und Freie Lehre
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The History Of Creation, Or, The Development Of The Earth And Its Inhabitants By The Action Of Natural Causes
A Popular Exposition Of The Doctrine Of Evolution In General, And Of That Of Darwin, Goethe, And Lamarck In Particular »

Pedigree of Man, and Other Essays, Tr. by E.B. Aveling
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The History Of Creation
Or The Development Of The Earth And Its Inhabitants By The Action Of Natural Causes. A Popular Exposition Of The Doctrine Of Evolution In General, And Of Tha... »

Anthropogenie
Oder, Entwickelungsgeschichte Des Menschen ... Keimes- Und Stammes-Geschichte ... »