Then there was the stranger—Dalgard knew that the ship which had brought him to this planet was somewhere in the north. Perhaps when he recovered, they could travel in that direction. But for the moment it was good just to be free, to feel the soft winds of summer lick his skin, to walk slowly under the sun, carrying the little bundle of things which belonged to the stranger, with a knife once more at his belt and friends about him.
But within the quarter-hour their peace was broken. Dalgard heard it first, his landsman's ears serving him where the complicated sense which gave the sea people warning did not operate. That shrill keening—he knew it of old. And at his warning the majority of the mermen plunged into the stream, becoming drifting shadows below the surface of the water. Only the four who were carrying the hammock stood their ground. But the scout, having told them to deposit their burden under the shelter of an overhanging ledge of rock, waved them to join their fellows. Until that menace in the sky was beaten, they dare not travel overland.
Was it still after him alone, hunting him by some mysterious built-in sense as it had overseas? He could see it now, moving in circles back and forth across the gorge, probably ready to dive on any prey venturing into the open.
Had it not been for the stranger, Dalgard could have taken to the water almost as quickly and easily as his companions. But they could not float the pilot down the stream, thus dissolving the thick coating of gel which was healing his terrible flash burns. And Those Others, were they following the trail of their mechanical hound as they had before?
Dalgard sent out questing tendrils of thought. Nowhere did he encounter the flashes which announced the proximity of Those Others. No, it would appear that they had unleashed the hound to do what damage it could, perhaps to serve them as a marker for a future counterattack. At present it was alone. And he relayed that information to the mermen.
If they could knock out the hound—his hand went to the tender scrape on his own scalp where that box had left its glancing mark—if they could knock out the hound—But how? As accurate marksmen as the mermen were with their spears, he was not sure they could bring down the box. Its sudden darts and dips were too erratic. Then what? Because as long as it bobbed there, he and the stranger were imprisoned in this pocket of the gorge wall.
Dalgard sat down, the bundle of the stranger's belongings beside him. Then, he carefully unfastened the scorched cloth which formed that bag and examined its contents. There was the belt with its pouches, sheaths, and tool case. And the weapon which the stranger had used to such good effect during their escape from the arena. Dalgard took up the gun. It was light in weight, and it fitted into his hand almost as if it had been molded to his measure.
He aimed at the hovering box, pressed the button as he had seen the other do, with no results. The stun ray, which had acted upon living creatures, could not govern the delicate mechanism in the hound's interior. Dalgard laid it aside. There were no more of the bombs, nor would they have been effective against such a target. As far as he could see, there was nothing among Raf's possessions which could help them now.
One of the black shadows in the water moved to shore. The box swooped, death striking at the merman who ran to shelter. A second followed him, eluding the attack of the hound by a matter of inches. Now the box buzzed angrily.
Dalgard, catching their thoughts, hurried to aid them. They undid the knots of the hammock about the helpless stranger, leaving about him only the necessary bandage ties. Now they had a crude net, woven, as Dalgard knew, of undersea fibers strong enough to hold captive plunging monsters a dozen times the size of the box. If they could net it!