“He must have gone overboard!” ejaculated Darry. “Sam! Sam! where are you?”
“He did go overboard,” panted Hockley, who had just been clearing his mouth of lake water. “I saw him go.”
“Then why didn’t you give the alarm?” demanded the professor indignantly. “How long ago was this?”
“Only half a minute, sir. I would have spoken before, but that last wave almost drowned me.”
“Sam! Sam!” called the others in concert, and listened attentively for an answer. When none came they looked at each other in increasing alarm.
“Did you see the boy go overboard?” asked the professor of the native boatman.
Salvador shook his head. “See noddings,” he said. “I do best to keep boat from turning up, señor.”
“We must turn back for him,” went on Professor Strong.
“Turn back, señor? Dat is dangerous,” and the native shook his head.
“Perhaps, but we must go back, nevertheless. Here, I will help you bring her around. Boys, watch for him, two to the right and two to the left. We must find and save him.”