Ernst Haeckel’s Artforms of Nature

Here’s a great library of Ernst Haeckel’s Artforms of Nature, available as 300dpi jpegs. The site’s in German, but it’s easy enough to find great specimens. Haeckel’s works are all in the public domain.

From Haeckel’s Wikipedia entry:

Ernst Haeckel was an eminent German biologist, naturalist, philosopher, physician, professor and artist. He named thousands of new species, mapped a genealogical tree relating all life forms, and coined many terms in biology, including phylum, phylogeny, ecology and the kingdom Protista.