At this moment there came a sudden exclamation from Captain Glenn, who was slightly ahead. He had just disappeared beyond a clump of trees larger than the rest. Jack stopped stock still. Visions of a snake of monstrous size rose before his eyes.
"Come on," said Williams.
Jack forced himself to follow the other. They darted along the path taken by Captain Glenn and there they came upon the cause of his exclamation. Directly ahead of them lay a broad expanse of water.
"The ocean again," said Captain Glenn. "I should say that we are on an island."
"By Jove!" said Jack, for the moment forgetting all about snakes, "I believe you are right. That means that we are marooned, sir."
"Not necessarily," said Captain Glenn. "We'll head north. We may strike a settlement there."
Accordingly they turned their steps in that direction.
For perhaps two hours they walked without finding signs of human habitation.
"Guess we've gone the wrong way," said Captain Glenn. "We should have turned south." He glanced at his watch. "We'd better be getting back to the others," he said, "or they will think something has happened to us."
They turned and retraced their steps. For perhaps an hour they walked along and then Jack, who was slightly in advance, stopped suddenly and held up his hand in a warning gesture.