Note: Project Gutenberg also has an HTML version of this file which includes the original illustration. See 44474-h.htm or 44474-h.zip: (https://www.gutenberg.org/cache/epub/44474/pg44474-images.html) or (https://www.gutenberg.org/files/44474/44474-h.zip) Aus Natur und Geisteswelt Sammlung wissenschaftlich-gemeinverständlicher Darstellungen 180. Bändchen…
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