Through Newgate and the stumps of the Roman wall, then, past the Prison, which was silent, but not empty. Towards the square-topped tower of Saint Paul's, where an immense bell was being walloped by tired ringers, counting the years of the dead. That old tower leaned to one side, and had for a long time, so that everyone in London had stopped noticing that it did. In these circumstances, though, it seemed to lean more, and made Daniel suddenly nervous that it was about to fall over on him. Just a few weeks ago, Robert Hooke and Sir Robert Moray had been up in its belfry conducting experiments with two-hundred-foot-long pendulums. Now the cathedral was fortified within a rampart of freshly tamped earth, the graves piled up a full yard above ground level.