As he left the shelter of the islands and faced a mile-wide stretch of open water, the cloud-bank was half way up from the horizon with long, ragged streamers stretching out before it. He thrust his paddle deep and sent the canoe leaping across the oily swells; but like the tentacles of an octopus, those cloud streamers seemed to reach after him, dragging the black, ominous bulk behind. Half a mile he made, the sweat standing out on his face, his breath coming in gasps. Another quarter mile. He was paddling with every scrap of strength and skill he had, yet the clouds were overhead now, reaching out and onward inexorably.