Both sides of the Darwin-Wallace medal awarded to Alfred Wallace at
the 1908 Linnean society meeting celebrating the 50th anniversary of
the reading of Darwin and Wallace's papers on natural selection.
image courtesy the Linnean Society.

July 1, 1858 - Charles Darwin and Alfred Wallace present papers
on the development of animals to the Linnean Society in London.

For the next 18 months (beginning this month),
the Linnean Society will be celebrating
Charles Darwin's life and his impact on science.