<p>The <a href="//commons.wikimedia.org/wiki/Tree_of_life" class="mw-redirect" title="Tree of life">Tree of life</a> image that appeared in Darwin’s <i>On the Origin of Species by Natural Selection</i>, 1859. 
</p><p>This is the only figure in <i>On the Origin of Species</i>.,  Darwin used this Tree of Life (TOL) as a  model for the theory of evolution.
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