"This tarpaulin has made the place very stuffy, but we must put up with it until sundown.

By the way, what is that ?" A light tap on the tarred canvas directly over his head had caught his ear.

Iris, glad of the diversion, told him she had heard the noise three or four times, but fancied it was caused by the occasional rustling of the sheet on the uprights.
Jenks had not allowed his attention to wander altogether from external events.

Since the Dyaks' last escapade there was no sign of them in the valley or on either beach.

Not for trivial cause would they come again within range of the Lee-Metfords.
They waited and listened silently.