The bush was dim with steamy shade when Austin and Jefferson plodded along a little path behind the beach where the oil was stored. It was with difficulty they made their way, for the soil was firmer there, and a dense undergrowth sprang up among the big cottonwoods which replaced the mangroves. They were draped with creepers, and here and there an orchid flung its fantastic blossoms about a rotting limb, while the path twisted in and out among them and through tangled thickets. It was then the hottest part of the afternoon, and save for the soft fall of the men's footsteps everything was still. The atmosphere was very like that of a Turkish bath, and as Austin stumbled along the perspiration dripped from him.

He had toiled strenuously from early dawn until darkness closed down, of late, and though he had, as yet, escaped the fever, every joint in his body ached, and he was limp and dejected with the heat and weariness. His only respite from labour had been the few hours spent on watch beside the landed oil when his turn came, and he had now come down with two of the Spaniards to relieve Jefferson, who was going back to the Cumbria. The latter glanced towards a ray of brightness that beat into the dim green shadow, and here and there flung a patch of brilliancy athwart the great columnar trunks.

"I've been wondering where this trail goes, and it seems to me there's an opening close in front of us," he said. "We'll rest when we get there, and I don't know that I'll be sorry. You have to choose between stewing and roasting in this country, and, when it lets my skin stay on me, I almost think the latter's easier."

Austin felt inclined to agree with him, for they had blundered through the shadowy bush for half an hour, and its hot, saturated atmosphere made exertion almost impossible. Still, he said nothing, and in a few more minutes they came out upon a glaring strip of sand beside another creek. Jefferson stopped a moment, with a little gesture of astonishment, in the shadow of a palm.

"What in the name of wonder have they been turning that sand over for?" he said.

Austin walked out of the shadow, blinking in the dazzling brightness the creek flung back, and saw that the sand had certainly been disturbed every here and there. It seemed to him that somebody had been digging holes in it and then had carefully filled them up.

"There isn't a nigger village nearer than the one where Funnel-paint lives, or I could have fancied they'd had an epidemic and been burying their friends," he said.

Jefferson shook his head. "They wouldn't worry to bring them here," he said. "Still, somebody has been digging since the last wet season, for it seems to me that when the rain comes the creek flows over here."

It occurred to Austin that one or two, at least, of the excavations had been filled in not long ago, but his comrade made no comment when he suggested it, and they went back together to the shadow of the palm, where Jefferson, sitting down thoughtfully, filled a blackened pipe.

It was several minutes before he broke the silence.