The sign was needed, for not many minutes had elapsed before there were shouts, the heavy beating of sweeps, and it was as evident to those in the boat as if they could see that a prahu had gone by the hidden opening through which they had passed, and was making at full speed for the river.

Hollins drew a deep breath, and passed his hand across his forehead.

"A respite, lad," he said; "but as soon as they see the main river clear they'll be back. Ask the girls if the men are to row again."

The question was not necessary, for one of the pair now signed to the two servants to resume their pulling, and the boat's speed was redoubled, while Beecher changed the form of his question, and the girl laughed.

"No," she said, shaking her head. "Prahu can't come along here. Water not deep enough."

"But the sampans?"

"Yes, and boats like this," said the girl. "Then you shoot and kill."

As she spoke she signed to the men to stop rowing, and the naga was turned into a side opening, and after a few minutes into another and another. For to the surprise of the young officers they found that this side of the river was one wide swamp full of dense vegetation, through which there was a perfect network of sluggish streams, forming a very labyrinth, in and out of whose mazy waterways they now rowed on and on in almost perfect silence, not a sound being heard but the dip of the oars and the soft washing of the agitated water among the straight columnar trunks which rose out of the black mud.

They went on for hours, till with the darkness the strange croaking and shrieking night sounds of the forest began. After many windings, they were amongst hanging boughs again which swept the top of their palm cabin, and the next minute were clear, with the bright stars overhead and the boat being carried seaward by the rushing stream.