Cosmos, a sketch of a physical description of the universe / By Alexander von Humboldt ; translated from the German, by E.C. Otté [B.H. Paul and W.S. Dallas].

Licence: Public Domain Mark

Credit: Cosmos, a sketch of a physical description of the universe / By Alexander von Humboldt ; translated from the German, by E.C. Otté [B.H. Paul and W.S. Dallas]. Source: Wellcome Collection.