Let me now introduce another anomaly, not so easily resolved this time, about the death of Karl Marx in London. This item, in fact, ranks as my all-time favorite, niggling little incongruity from the history of my profession of evolutionary biology. I have been living with this bothersome fact for twenty-five years, and I pledged long ago to offer some resolution before ending this series of essays at the millennium. I think that I now have the basic answer, and not a moment too soon. Let us, then, return to Highgate Cemetery and to Karl Marx's burial on March 17, 1883.