JACK RODE WEST OUT OF Amsterdam, through Haarlem, and then found himself suddenly alone, and perilously close to being under water: autumn rains had submerged the pastures, leaving the walled towns as islands. Soon he reached the line of dunes that fenced the country off from the North Sea. Not even Dutchmen could find a use for this much sand. Turk was unsettled by the change in the ground, but then he seemed to remember how to go on it – perhaps his Turkish master had used to take him for gallops in some Mohametan desert. With a plodding and swimming kind of gait he took Jack up to the crest of a dune. Below them, a mile away, Alp-sized green waves were hurling themselves up onto the sand with monstrous roaring and hissing. Jack sat there and stared until Turk grew annoyed. To the horse it was cold and foreign, to Jack it was just this side of cozy. He was trying to count the years since he'd seen open salt water.