Darwin Online

Slashdot beat me to the punch on this one, so many of you may have already heard about it, but that doesn't make it any less cool: Pretty much every scrap of writing available from Charles Darwin, from his books to his notes and correspondence, is now available online:

Darwin Online

I'm particularly interested in his The Variation of Plants and Animals Under Domestication, an oft forgotten work by Darwin, but very interesting regardless. The book is full of discussions of diversity in fruits, and, in addition to the book, the archive has several other notes and articles on fruit, including this discussion of seedling fruit trees. A quick overview suggests that he was a big fan of stone fruit.