Nearer the river, in the flat country beyond the Tower, Naval works took over from Military ones: shipyards messy with blond timber from Scotland or Massachusetts, splattered planks drawing themselves up into the curved hulls of ships, dead firs resurrected as masts. Colossal plumes of black smoke spreading downwind, pointing to Comstock-forges where tons of iron were being melted down and poured into subterranean cannon-molds, and windmill-blades rolling on the horizon, turning the gear-trains of mighty Comstock-machines that bored holes down the centers of those cannons.