Who would come? he asked himself. Mr Gregory and two men, or Small? He came to the conclusion that it would be Small, and at times he almost fancied that he heard the distant murmur of the boatswain’s deep rough voice.

Then came another flash more vivid than ever. And this time it was as he turned in the direction where Jimpny lay sleeping. The result was that he saw the poor fellow’s swarthy panic-stricken countenance, and the dog and the monkey snuggled up together as comfortably as they could make themselves; and they did not even start as a tremendous peal of thunder broke, seeming as if it would shake the rocks down above their heads.

Then all was pitchy blackness again, and the silence by contrast was awful.

Another flash, and while it was quivering in the air the thunder came with one sudden instantaneous crash as if some magazine of powder had been exploded, while after the first burst the peal rolled round and round and slowly died away, as if it were passing along vast metallic corridors to be emptied far away in space.

As Mark sat listening to the dying away of the thunder and watching for the next flash, comparing the noise with that which he heard from the jungle, and wondering why the one should be looked upon as a matter of course while the other caused the most acute horror, he became aware of a strange hissing sound, apparently at a great distance, but evidently coming on rapidly. The sound increased till, from a hiss it became a rush, then by rapid degrees a tremendous roar, and then, as if in an instant the hurricane was upon them, the rain came down in sheets, the sound swept by the rocks, and as the lightning flashed Mark became aware of the fact that the air looked thick and dense and as if filled by the spray from off the sea.

But the storm swept over from behind, so that though the water poured down from all round the rock beneath which they were sheltered none was driven in.

To sleep was out of the question had the watcher felt disposed, for he was bound to confess that it was impossible for help to come to him in the midst of such a terrific deluge. Meanwhile as the rain came down in a veritable water-spout, hissing angrily as if a myriad of serpents were in the air, the lightning flashed and the thunder roared so incessantly that it became almost a continual peal.

At the best of times, and in company, the storm would have been attended by feelings of awe; but now, comparatively speaking, alone in that solitude with the deafening din and the terrible weird glare of the lightning flashing through the rain, Mark could not help for the second time that day a strange feeling of dread come upon him with chilling force.

Just when the storm was at its worst there was a soft whining sound on his right, and as he sat up and listened in that direction a cold nose touched his hand, and Bruff thrust his head into his master’s lap, uttering a low snuffling sound indicative of content.

Almost at the same moment, as the thunder paused for a moment, came a whimpering chattering from his left, and a little thin hand caught hold of him.