The globes and the winking lights on the water connected in his mind, argued new danger. Rynch took careful aim, fired a dart at one which had grounded on the pointed tip of the rocks where the river current came together after its division about the island. For the first time Rynch realized those things below were moving _against_ the current--they had come upstream as if propelled.
He had fired and the light was still there, two more coming in behind it, so that now there was an irregular cluster of them. And there was activity on the water-washed rocks before them. Just as the scavengers had moved ahead of the globes on land, so now aquatic creatures had come out of the river, were flopping higher on the islet. And those lights were changing color--from white to reddish-yellow.
Rynch scrabbled with one hand in a rock crevice, found a stone he had noted earlier. He hurled that at the cluster of lights. There was a puff of brilliant red, one was gone. Something flopping on the rocks gave a mewling cry and somersaulted back into the water. Then a finger of mist drew between Rynch and the lights which were now only faint, glowing patches. He swung down from his perch, shook Hume awake.
The Out-Hunter made that instant return to full consciousness which was another defense for the men who live long on the rim of wild worlds.
Rynch pulled him forward. The mist had thickened, but there were more of those ominous lights at water level, spreading down both sides of the point, forming a wall. Dark forms moved out of the water ahead of them, flopping on the rocks, pressing higher, towards the ledge where the men stood.
"Those globes--I think they're moving in the river now." Rynch found another stone, took careful aim, and smashed a second one. "The needler has no effect on them," he reported. "Stones do--but I don't know why."
They searched about them in the crevices for more ammunition, laying up a line of fist-sized rocks, while the lights gathered in, spreading farther and farther down the shores of the islet. Hume cried out suddenly, and aimed his ray tube below. The lance of its blast cut the dark as might a bolt of lightning.
With a shrill squeal, a blot shadow detached from the slope immediately below them. A vile, musky scent, now mingled with the stench of burning flesh, set them coughing.