An abortive struggle against the wire rope taught him the folly of such an effort. He was in deep freeze as far as any bodily movement was concerned. Shann closed his eyes, settled to that same concentration he had labored to acquire on the Throg ship. If there was any chance of the Wyvern communication working again, here and now was the time for it!

Again he built his mental picture of Thorvald, as detailed as he had made it in the Throg ship. And with that to the forefront of his mind, Shann strove to pick up the thread which could link them. Was the distance between this camp and the seagirt city of the Wyverns too great? Did the Throgs unconsciously dampen out that mental reaching as the Wyverns had said they did when they had sent him to free the captive in the skull?

Drops gathered in the unkempt tight curls on his head, trickled down to sting on his tender skin. He was bathed in the moisture summoned by an effort as prolonged and severe as if he labored physically under a hot sun at the top speed of which his body was capable.

Thorvald—

Thorvald! But not standing by the window in the Wyvern stronghold! Thorvald with the amethyst of heavy Warlockian foliage at his back. So clear was the new picture that Shann might have stood only a few feet away. Thorvald there, with the wolverines at his side. And behind him sun glinted on the gem-patterned skin of more than one Wyvern.

"Where?"

That demand from the Survey officer, curt, clear—so perfect the word might have rung audibly through the dome.

"The camp!" Shann hurled that back, frantic with fear that once again their contact might fail.

"They want me to call in the transport." He added that.

"How soon?"