"Who shot you?" demanded Zveri when he saw the arrow protruding from the sentry's leg.
"I do not know," replied the man.
"Have you an enemy in camp who might want to kill you?" asked Zveri.
"Even if he had," said Romero, "he couldn't have shot him with an arrow because no bows or arrows were brought with the expedition."
"I hadn't thought of that," said Zveri.
"So it must have been some one outside camp," declared Romero.
With difficulty and to the accompaniment of the screams of their victim, Ivitch and Romero cut the arrow from the sentry's leg, while Zveri and Kitembo discussed various conjectures as to the exact portent of the affair.
"We have evidently run into hostile natives," said Zveri.
Kitembo shrugged non-committally. "Let me see the arrow," he said to Romero. "Perhaps that will tell us something."
As the Mexican handed the missile to the black chief, the latter carried it close to a camp fire and examined it closely, while the white men gathered about him waiting for his findings.