WITH ONE EYE J ACK peered through his oar-lock across the gulf. He was looking edge-on through a slab of dry heat that lay dead on the water, as liquefacted glass rides above molten tin in a glass-maker’s pan. On a low flat shore, far away, white cabals of ghosts huddled and leaped, colossal and formless. None of the slaves quite knew what to make of it until they crawled in closer to shore, a cockroach on a skillet, and perceived that this Gulf was lined with vast salt-pans, and the salt had been raked up into cones and hillocks and step-pyramids by workers who were invisible from here. When they understood this, their thirst nearly slew them. They had been rowing hard for days.