The fog sea thinned before Ho Dyak, and he could see the dank rocks of the cliffs he scaled a scant twenty feet beneath his feet. The network of blue-veined pale vines that he climbed thinned even as the air itself thinned. Far below him in the lowlands the mat of agan vines was three hundred feet in depth in many places. Higher and higher climbed Ho Dyak, his long pale face, with its full red lips and great thick-lidded purple eyes, drawn with pain. For the air of the uplands was chill. As the