“Stop the engine,” said Stranleigh. “Swing round the stem of the launch, and come up alongside at a distance of about twenty feet, then regulate her speed to suit that of the launch.”

The manager, captain, and mate, all standing up, seemed struck into immobility with astonishment at seeing such a cutter in such a region.

They made no motion to raise their guns, or even to salute the oncomer. The motor boat came past them like a wild duck, without sound of machinery or sight of vapor, swung gracefully round, and came up alongside with a light precision which should have aroused the admiration of an old salt like the captain of the Rajah.

But the three men were filled with consternation. The ruddy, weather-beaten face of the captain turned to a mottled purple; his jaw dropped, and he stood there gaping, with fear in his bulging eyes. The erect, easy grace of Lord Stran-leigh, clad in white, instantly suggested to his experienced eye the British naval officer. This error was heightened by the natty, gold-braided hat worn by the doctor; but the attitude of the two men in white was not so disquieting as the demeanor and appearance of the boat herself. She was most expertly handled, and came alongside with that impudent, saucy air characteristic of midshipmen and the smaller units of the British navy. There was a touch of arrogance in her rakish build, as if she knew the whole power of a maritime nation was typified in her. The significance of her armored sides was not lost on the two seafaring men, even though the manager of the mine did not become immediately conscious of it, but all three recognized the sinister significance of that projecting prow of steel, which was plainly, if waveringly seen, through the transparent green waters, dangerous as the nose of a maneating shark.

Lord Stranleigh smiled as he realized the panic his sudden appearance had caused.

“Good morning,” he greeted them pleasantly. “Have you seen anything of timber floating down this river?”

“Timber?” gasped the manager of the mine. “Yes—yes—we have.”