"I have an idea, Mr. Spilett," said Herbert. "If I were to climb to the top of one of these kauris, I could survey the country for an immense distance round."
"The idea is good," replied the reporter; "but could you climb to the top of those giants?"
"I can at least try," replied Herbert.
The light and active boy then sprang on the first branches, the arrangement of which made the ascent of the kauri easy, and in a few minutes he arrived at the summit, which emerged from the immense plain of verdure.
From this elevated situation his gaze extended over all the southern portion of the island, from Claw Cape on the south-east, to Reptile End on the south-west. To the north-west rose Mount Franklin, which concealed a great part of the horizon.
But Herbert, from the height of his observatory, could examine all the yet unknown portion of the island which might have given shelter to the strangers whose presence they suspected.
The lad looked attentively. There was nothing in sight on the sea, not a sail, neither on the horizon nor near the island. However, as the bank of trees hid the shore, it was possible that a vessel, especially if deprived of her masts, might lie close to the land and thus be invisible to Herbert.
Neither in the forests of the Far West was anything to be seen. The wood formed an impenetrable screen, measuring several square miles, without a break or an opening. It was impossible even to follow the course of the Mercy, or to ascertain in what part of the mountain it took its source. Perhaps other creeks also ran towards the west, but they could not be seen.
But at last, if all indication of an encampment escaped Herbert's sight, could he not even catch a glimpse of smoke, the faintest trace of which would be easily discernible in the pure atmosphere?
For an instant Herbert thought he could perceive a slight smoke in the west, but a more attentive examination showed that he was mistaken. He strained his eyes in every direction, and his sight was excellent. No, decidedly there was nothing there.