Valannus paled. “I did not know he had left the fort. He must have been mad!”

“He was,” answered Conan. “Like the other four; each one, when his time came, went mad and rushed into the woods to meet his death like a hare running down the throat of a python. Something called to them from the deeps of the forest, something the men call a loon, for lack of a better name, but only the doomed ones could hear it. Zogar Sag has made a magic that Aquilonian civilization can't overcome.”

To this thrust Valannus made no reply; he wiped his brow with a shaky hand.

“Do the soldiers know of this?”

“We left the body by the eastern gate.”

“You should have concealed the fact, hidden the corpse somewhere in the woods. The soldiers are nervous enough already.”

“They'd have found it out some way. If I'd hidden the body, it would have been returned to the fort as the corpse of Soractus was — tied up outside the gate for the men to find in the morning.”

Valannus shuddered. Turning, he walked to a casement and stared silently out over the river, black and shiny under the glint of the stars. Beyond the river the jungle rose like an ebony wall. The distant screech of a panther broke the stillness. The night pressed in, blurring the sounds of the soldiers outside the blockhouse, dimming the fires. A wind whispered through the black branches, rippling the dusky water. On its wings came a low, rhythmic pulsing, sinister as the pad of a leopard's foot.

“After all,” said Valannus, as if speaking his thoughts aloud, “what do we know — what does anyone know — of the things that jungle may hide? We have dim rumors of great swamps and rivers, and a forest that stretches on and on over everlasting plains and hills to end at last on the shores of the western ocean. But what things lie between this river and that ocean we dare not even guess. No white man has ever plunged deep into that fastness and returned alive to tell us what be found. We are wise in our civilized knowledge, but our knowledge extends just so far — to the western bank of that ancient river! Who knows what shapes earthly and unearthly may lurk beyond the dim circle of light our knowledge has cast?