Half an hour passed thus, and then an hour. Overhead, the white curtain was thicker than ever; yet it seemed to her that it was a little lighter now than it had been when they were starting, showing that it was less the time of day than the sheer density of the fog that had made it so impossible to see upon their own island. On and on she rowed; still on and on, always on and on. Already it appeared to her that she had been rowing quite long enough to have crossed Gregory’s Sound, here little more than a mile wide, and she hoped, therefore, that she had got upon the right track, and would soon be passing the straggling line of sandbanks which surround Illaunalee. Odd-looking vortexes and currents were visible now in the dimness overhead; mysterious maelstroms, gazing up, instead of down, into which, the careering fragments might be seen circling round and round; breaking capriciously off, joining together again, gathering into interlaced patterns, sweeping up and down, expanding, converging; all this movement going on along the edge of a sort of pit, scooped as it were out of the very air itself. Suddenly, while she was looking at it, the whole thing would close up, and a new vortex or funnel break out in an altogether different place. Grania was beginning to get drowsy over her task, what with the weight of the air and with the pressure of her own troubled thoughts. Her drowsiness did not perceptibly slacken the activity of her muscles, but she rowed more and more mechanically, the rhythm of her own movements seeming to produce a dream-like effect upon her brain. Thoughts, or rather dreams, of Honor visited her from time to time, thoughts, too, or dreams, of Murdough, both equally broken, confused, fragmentary. As far as her own sensations went, she might have been rowing there the whole live-long night, so benumbing and sleep-like was that torpor. How long she really had been rowing she could not in the least have told, but her thoughts or her dreams were suddenly cut short--cut into as it were--by another wild cry from Phelim. This time it was much more than a cry, it was an actual scream; a shrill, discordant screech, such as some animals give when they are in the intensest throes of terror. Grania on her side started violently, and turned round. The boy, she found, had leaped up from his seat, and was standing at his full height, waving his thin arms frantically in the air, calling to her, and pointing directly above his head, with gesticulations violent enough to all but swamp the frail craft they were in. Another moment and it seemed as if he would leap clean overboard from sheer panic.