Let's go back and get it." "Let's go back soon," replied Mike; "but I don't think we'll come again to-day.

My head feels all of a whizz." "Yes, it is exciting," said Vince thoughtfully.

"Perhaps you're right: we won't come back to-day." And, contenting themselves with a long, searching inspection from the window-like place they occupied, they soon after returned, and, after placing the grapnel so that it could be jerked out, went down the rope, got the iron hooks loose, and seated themselves to think.
That evening they got home early, each so full of the great discovery that, when they went to bed, it was long before they slept, and then their brains were busy with strange dreams, in which one was fighting for his life against a host of well-armed men, the victor taking a vessel with the treasure of valuable silks and spices, and making his parents rich people to the last.
But an idea was dominant with both when they woke, soon after sunrise.
They must go back to the cavern soon, and probe the mystery to the very end..