Ula-Ula man's island

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Darwin’s first sketch of the tree of life from one origin.
Note the cross-bars for extinction — and that change is not conceived with some direction-as-progress. And notice Darwin’s simple words introducing the sketch, “I think…”
(image source: Into the diagram; text source: Kasama)

Darwin’s first sketch of the tree of life from one origin.

Note the cross-bars for extinction — and that change is not conceived with some direction-as-progress. And notice Darwin’s simple words introducing the sketch, “I think…”
(image source: Into the diagram; text source: Kasama)