CHAPTER III
'Walter,' said Harry, throwing down the pigeon which he had shot, and pointing to Little Nobby's, 'this is the lowest tide I have ever seen. Look, the topmost fringe of kelp on the rocks is quite dry, and six feet above the water, and there is no surf. Let's swim across the gut into the cave.'
'As you please, sir,' the young man answered, his sun-tanned face lighting up with pleasure; 'the wind is westerly, and the water very clear; so, if there are any sharks about we can easily see them.'
So presently down we trooped, and, clambering over the jagged pinnacles of rock, soon reached the seaward face of Little Nobby's. The cave of which my brother had spoken was in the very centre of the cone, and the only known way of access to it was by swimming across the narrow gut or channel which cleft in twain the base of the hill. A boat, in calm weather, might have easily rowed up to the mouth of the cave, but only during a very low tide. No one, so far, had attempted this, and 'King Billy,' when he saw my brother and Trenfield strip and jump into the water, seemed much disturbed. The cave, he said, was the home of a 'debbil-debbil,' and 'twas dangerous for any human being to enter it. But Harry and Trenfield had already swum across, clambered up the kelp-covered ledge of the cave and disappeared into the darkness beyond.
For nearly ten minutes, or perhaps a quarter of an hour, Will and I waited impatiently for their return, grumbling at not being allowed to go with them, for the sea was as smooth as a mountain lake, and the water so clear that the smallest pebble could be discerned lying upon the white sandy bottom five fathoms below.
Said Will presently, 'I don't believe there's a shark within a mile; do you?'
'No,' I answered, looking longingly at the crystal water and then at the black mouth of the cavern, which neither Will nor I had ever entered.
'Then come on,' said Will, quickly, and in a few seconds we were out of our clothes, and paying no heed to 'King Billy's' exclamations of terror we dropped quietly into the water and swam across, telling him to stay where he was and keep a look-out for sharks.
A few strokes brought us safely over, and then, as we climbed up and stood on the cold rocky floor of the dark cave, our hearts began to fail us somewhat—the place was so grim, silent and terrifying.
Feeling our way carefully along, however, we advanced for some ten or twelve yards and then stopped, for though we heard the voices, we could see the figures of Harry and Trenfield but dimly.