“No, this way; let us go along the river.”

Again there came a splash from the river, and then, within the shaft of light flashing on the water, there glowed two glittering green specks.

“Look!” she said, with a gasp.

“Hold the lantern,” he said quickly. The rifle rang out, and then the water was lashed into foam, and a dark body showed for a moment in the light.

“A crocodile,” he said, with a nervous laugh.

“A crocodile! Can it—oh, merciful heavens—do you remember when we saw the Irene—the shark?”

“Don’t,” he said, laying his hand on her shoulder.

A deep sigh came to their straining ears, followed by a confused noise.

“Oh,” she cried, “if I could only see what forms there are about I would not be afraid.”

“I think that noise is from the oxen,” he said.