“They shot at you when you turned your back,” said Rodier.  “Shall we fire at them?”

“No; leave them alone.  I think they’re scared now.  But it’s lucky I thought of setting fire to the petrol, or they would certainly have been upon us, and there’s such a crowd of them that we might have been done for.  Set the engine working.  The noise will keep them away.”

With some difficulty they turned the aeroplane round to face down stream, where there was a fairly level stretch of a few yards for running off.  Vaulting on board, they started, and in five or six seconds the aeroplane was humming along a hundred feet above the trees.

CHAPTER XIII

THE RESCUE

Smith had taken no account of the time he had lost, first by the storm, then by the overhauling of the engine; but, little or much, it increased the peril of his father, and lessened his own chance of accomplishing what he had set out to do.  When an engine is always running at full speed, time lost can only be made up by reducing the length of stoppages, and Smith felt even this to be almost out of the question.  As soon as he was once more afloat, he thought his best plan was to make for the coast again, and follow this without attempting to cross the mountains.

The storm had ceased; the engine was working smoothly, and, steering south-east, Smith in a few minutes found himself again in the neighbourhood of Port Moresby.  Again he ran down the coast, but when about half-way between the port and the extreme south-east corner of the island he espied a gap in the mountain chain and sped through it, almost exactly on the ten-degree line.  He had to rise to a considerable height, and was for some moments troubled by the masses of snow-white cumulose clouds that lay beneath him, cutting off all view of the ground.  The vast expanse of cloud lay dazzling white in the sunlight, with peaks and crags such as he imagined Alpine summits must show.  But though it appeared to be perfectly still, every now and then he saw small jets of mist shoot upward, like water from a geyser, and at such times the vertical currents affected the elevation of the aeroplane.  He soon crossed this cloudy sea, however, and in a few hours reached the north-east coast of New Guinea, and knew that nothing but an island-spangled sea separated him from his destination.

About noon he came in sight of the mountains of Vanguna Island to the east of New Georgia.  Ysabel Island lay beyond this, running from north-west to south-east.  His intention was to round Cape Prieto, the south-eastern extremity of it, and search the eastern shore northward.  In another hour he saw Russell Island, a green gem in the ocean southward, and beyond this, to the south-east, the peaks of Guadalcanar.  Another twenty minutes brought him abreast of Florida Island, and he was heading up the Indispensable Strait, with Thousand Ships Bay and the lofty peaks at the southern end of Ysabel lying on his left hand.