Ross headed straight toward that spray until he stood knee-deep in the curling, foam-edged water and felt its tug on his body almost as strong as that other tug upon his mind. He knelt, letting the salt water sting to life every cut, every burn, sputtering as it filled his mouth and nostrils, washing from him the slime of the bog lands. It was cold and bitter, but it was the sea! He had made it! Ross Murdock staggered back and sat down suddenly in the sand. Glancing about, he saw that his refuge was a rough triangle between two of the small river arms, littered with the debris of the spring floods which had grounded here after rejection by the sea. Although there was plenty of material for a fire, he had no means of kindling a flame, having lost the flint all Beaker traders carried for such a purpose. This was the sea, and against all odds he had reached it. He lay back, his self-confidence restored to the point where he dared once more to consider the future. He watched the swooping flight of gulls drawing patterns under the clouds above. For the moment he wanted nothing more than to lie here and rest. But he did not surrender to this first demand of his over-driven body for long. Hungry and cold, sure that a storm was coming, he knew he had to build a fire--a fire on shore could provide him with the means of signaling the sub. Hardly knowing why--because one part of the coastline was as good as another--Ross began to walk again, threading a path in and out among the rocky outcrops. So he found it, a hollow between two such windbreaks within which was a blackened circle of small stones holding charred wood, with some empty shells piled near-by. Here was unmistakable evidence of a camp! Ross plunged forward, thrusting a hand impetuously into the black mass of the dead fire. To his astonishment, he touched warmth! Hardly daring to disturb those precious bits of charcoal, he dug around them, then carefully blew into what appeared to be dead ashes. There was an answering glow! He could not have just imagined it. From a pile of wood that had been left behind, Ross snatched a small twig, poking it at the coal after he had rubbed it into a brush on the rough rock. He watched, all one ache of hope. The twig caught! With his stiff fingers so clumsy, he had to be very careful, but Ross had learned patience in a hard school. Bit by bit he fed that tiny blaze until he had a real fire. Then, leaning back against the rock, he watched it. It was now obvious that the placement of the original fire had been chosen with care, for the outcrops gave it wind shelter. They also provided a dark backdrop, partially hiding the flames on the landward side but undoubtedly making them more visible from the sea. The site seemed just right for a signal fire--but to what?