Night came over Spain as they stood there and talked, and lights were lit in the windows of Sanlúcar de Barrameda and in the great villas of Bonanza, where dinners were being cooked—Jeronimo had told them of the queer Spanish practice of dining late at night, and they had already made it part of the Plan. The rhythm of the waves, heaving themselves sluggishly against the beach at the foot of the town, underwent some sort of subtle change, or so van Hoek claimed. He spoke words in Dutch that meant "the tide is running out" and climbed down a pilot’s ladder into the galleot’s tiny skiff, which had been let down into the water. Here he took a kilderkin—a small keg, having a capacity of some eighteen gallons—removed one end, ballasted it with rocks, and planted a few candles in it. After lighting the candles he released it into the Guadalquivir, and then spent the better part of an hour watching it glide slowly out to sea. Jack meanwhile kept his eyes fixed on the landing-place that he had picked out on the river-bank, as slowly it faded and became a black void in a constellation of distant lanthorns.