Haeckel, Ernst, zoologist and philosopher, professor in Jena, as Darwinist founder of "Monism" (1834-1919). Portrait photography with eigh. Dedicated to "Ernst Haeckel" on the back. 16.5 x 10.5 cm (cabinette format). (Jena, probably around 1891). "Mr. Dr. Persifor Frazer (Philadelphia) for a friendly memory. Ernst Haeckel (Jena)". The recording of the Baden-Baden Hofphotographer W. Kuntzemüller shows Haeckel's head as a relief in the profile, apparently the relief made by Josef Kopf (from Baden-Baden) in Rome in 1890. - 1 broken corner (outside the picture) restored. - As well: The same. Eigh. Cardboard as album sheet m. u. "Ernst Haeckel". 1 p. With eif. Envelope. Jena 6.II.1919. - 2 quotes from Haeckel's books: "Universum perpetuum mobile"! (World Puzzle, 1899). - 'Universium ubique sensibile'! (Crystal Souls, 1917)".