Fors whistled in Lura. She examined the evidence on the floor and waited for instructions. But she was displaying none of the disgust with which she had greeted that earlier spoor. This might have been left by a roving Plainsman who was exploring the city on his own. If that were so, it behooved Fors to move quickly. He must get back to the Eyrie and return with help before some other tribe staked out a fair claim to the riches here. Once or twice before the mountaineers had been so disappointed.

Now there would be no question about leaving most of the spoil he had gathered. He must cache it in the museum and travel as light as possible to make time. Frowning, he stamped out of the shop and jerked at the mare’s lead rope.

They came into the woods, cutting across a glade in the general direction of the museum. The mare snorted as they passed the end of the lake. Fors tugged her along by main force, bringing her up the steps to be relieved of her load. He packed the bundles into the room he now considered his own and freed the mare for grazing. Lura would keep watch until he had time to get everything in order.

But when Fors spread out the morning’s loot On the floor he found it very difficult to pick and choose. If he took this—then he could not carry that—and that might make a greater impression upon the experts of the Eyrie. He made piles, only to completely change their contents three and four times over. But in the end he made up a pack which he hoped would best display to the mountain clan the quality of this find and be a good example of his own powers of selection. The rest could be easily concealed somewhere in the rambling halls of this building until he returned.

He sighed as he began to sort the discards into order. There was so much to be left behind—why, he should have a pack train of horses, such as the Plains tribes used to carry their gear on the march. The drum rolled and he picked it up, rubbing his fingers across its top to hear again the queer pulsing sound. Then he tapped with his nails and the sound echoed weirdly through the halls.

This must have been the drum which had sounded through the night after his fight with the boar. A signal—! He could not resist other experimental thumps—and then tried out the rhythm of one of his own mountain hunting songs. But this strong music was more eerie than any from the flute or the three- and four-stringed harps his people knew.

As the frightening rumble died away Lura flowed in, her eyes uncannily aglow, haste and urgency expressed in every dark hair on her head. He must come with her and at once. Fors dropped the drum and reached for his bow. Lura stood by the door, her tail tip flicking. •^ She went down the steps in two bounds and he went after her, not sparing his leg. The mare was standing in the shallows of the lake undisturbed. Lura glided on, between trees and bushes and into the thick depths of the wood. Fors followed at a slower pace, not being able to move so quickly through the green obstruction.

But before he had gone out of sight of the lake he heard it—a faint moaning cry, almost a sigh, which had been wrung out of real suffering. It arose to a hoarse croak, framing muffled words he did not understand. But human lips had shaped them, he was sure of that. Lura would not have guided him to one of the Beast Things.

The gabble of strange words died away into another moan which seemed to rise out of the ground before him. Fors shied away from an expanse of dried grass and leaves which lay there. Lura had dropped to her belly, reaching out with a forepaw to feel delicately of the ground, not advancing into the small clearing.

One of the pits which he had found throughout the city was Fors’ first thought—at any rate a hole of some sort. Now he could see a break through at the opposite end of this cleared space. He started to edge around, treading on the half-exposed roots of trees and bushes and holding on firmly to anything which looked sturdy.