A few minutes later a cloud of smoke arose from one of their centers. This was followed by several more. A huge, thick smudge was soon rising upward from the earth, and rolling on the breeze to envelop all the headland.

The Dyaks had gathered enormous quantities of resinous wood, and had deliberately fired the jungle!

CHAPTER XXXV

A BATTLE IN THE SMOKE

No doubts could be for long entertained as to what the smudge was expected to accomplish. Its dense and suffocating fumes not only rendered a further watch upon the clearing or the trail practically useless, but it seemed to Grenville highly improbable that he or Elaine could for long survive the pungent reek they were soon obliged to breathe.

There were two slight elements only in their favor. One was the passageway, through the rock, where clean fresh air was constantly flowing upward; the other was the very breeze itself that swept the smoke upon them. It frequently split the cloud of black and gray upon two juttings of the headland, or even beat it down and mingled its own overheated but acceptable ozone with the otherwise stifling fume.

Anger and horror together had lodged in Grenville's being. That the Dyaks would soon attempt a sneak upon them, under cover of the cloud, he felt was as certain as that hideous death must be their portion, were this business sufficiently prolonged. Even retirement to the cavern could avail them nothing but a short delay of the fate they must finally face when their food and water should be presently exhausted.

Under cover of the drifting smudge, he sent Elaine to the passage. As long as a breath remained in his lungs he resolved he would not desert his post, where he waited for attack by the trail. To permit the fiends to swarm upon the terrace, destroy or capture his powder and the gun, and prison himself and Elaine in the narrow gallery, was a thought that aroused him through and through.

All further contemplation of his scheme for alluring the Dyaks to the cavern was necessarily abandoned. The most he could do was to watch as before, and, perhaps, convey his bombs and stores to the passage, as time and his highly essential vigilance permitted.