Half way upward down to Cliff Villa he met Frumuos toiling upward. Him he greeted and quickly informed of the situation.
"The bridge is down!" he panted. "I cut it! The further shore is swarming with enemies. Two have reached this side!"
"What is this, O Kromno?" asked the man anxiously, pointing at Allan's shoulder. "Have they wounded you?"
Allan looked and saw a poisoned dart hanging loosely in his left sleeve. As he moved he could feel the point rubbing against his naked skin.
"Merciful Heaven!" he exclaimed. "Has it scratched me?"
With infinite precautions he loosened and threw off his outer garment. He flung it, with the dart still adhering, down over the cliff.
"Look, Frumuos!" he commanded. "Search carefully and see if there be any scratch on the skin!"
The man obeyed, making a minute inspection through his mica eye-shields. Then he shook his head.
"No, Kromno," he answered. "I see nothing. But the arrow came near, near!"
Stern, tremendously relieved, gestured toward the caves.
"Go swiftly!" he commanded. "Bring up every man who still can fight. All must have full burdens of cartridges. Even though the bridge be down, the enemy will still attack!"
"But how, since the great river lies between?"
"They can climb down those cliffs and swim the river and scramble up this side as easily as we can walk on level ground. Go swiftly! There is no time to lose!"
"I go, master. But tell me, the two who have already reached this side--shall we not first slay them?"
Allan thought. For the first time he now realized clearly the terrible peril that lay in these two Anthropoids already inside the limits of the colony.
He peered up the pathway. No sign of them above. Their animal cunning had warned them not to descend to certain death.
Now Allan knew they were at liberty inside the palisades, waiting, watching, constituting a deadly menace at every turn.
In any one of a thousand places they could lie ambushed, behind trees or bushes, or in the limbs aloft, and thence, unseen, they could discharge an indefinite number of darts.
It was now perilous in the extreme even to venture back to the palisade. Any moment might bring a flicking, stinging messenger of death. Those two, alone, might easily decimate the remaining men of the colony--and now each man was incalculably precious.
"Go, Frumuos," Allan again commanded. "For the moment we must leave those two up there. Go, muster all the fighting men and bring them up here along the terrace. I must think! Go!"
Suddenly, before the messenger had even had time to disappear round the first bend in the path, Allan found his inspiration.