Just after page 116 of Charles Darwin's original edition of On the Origin of Species appears the book's only illustration, a gatefold diagram of descent with modification, a branching-tree schema that would later come to be known as the "Diagram of Divergence of Taxa" (Darwin himself described it as charting "divergence of character" [Darwin, 1859, p. 116]) (Figure 1).The visual rhetoric of the tree diagram and the conditions and entailments of its theoretical declarations about change and inheritance over time have been expertly interpreted by historians, philosophers, anthropologists, and literary scholars of science (see Browne, 1980;Ospovat,
Stored only when both papers are in the corpus — 33 citations exist upstream.