Figures & data
Figure 1. The German evolutionary biologist, artist and philosopher of science Ernst Haeckel (1834–1919). The image was taken in 1872. The then 38-year-old Professor was already famous for his books and lectures on Darwinian evolution and related topics (U. Kutschera, private collection)
Figure 2. Monophyletic tree of life published by Haeckel 1868 in his Natural History of Creation. The drawing indicates that all organisms on Earth descended from “neutral monera” (i.e., bacteria), and then split into separate lineages of plants (Pflanzenreich), protists (Protistenreich) and animals (Thierreich).Citation6
Figure 3. Two watercolors by Ernst Haeckel in which trees and other plants are depicted in their natural environment. The landscape shown on the left (drawn 1896), as well as the letter of Haeckel, dated 31.03.1902 (right image), were created for Mrs. Frida von Uslar-Gleichen (1864–1903) (U. Kutschera, private collection)
