THE P RISON OF THE I NQUISITION lay not far from the Mint where, in theory, every ounce of silver that came up out of the mines of Mexico was turned into pieces of eight. In practice, of course, somewhere between half and a quarter of Mexico’s treasure was smuggled out of the country before the King could take his fifth, but still the amount that came down into Mexico City sufficed to mint sixteen thousand pieces of eight every day. This was a large enough number to mean almost nothing to Jack. A couple of thousand an hour began to make sense to him. The booming and grinding of heavy silver-carts on the cobblestones beyond the prison walls gave a feeling of the sheer mass of metal involved.