There’s a book review you should not miss at http://www.nytimes.com/books/first/j/jones-ghost.html
Oops ... I got there by clickling on the third item down at http://www.google.com/search?sourceid=navclient&ie=UTF-8&rlz=1T4ACAW_enUS351US351&q=%22Darwin%27s++Ghost%22
Darwin’s Goat is still a goat no matter how trimmed and shaded.