the volcano, to break through into that air-chamber from above. And once it did, the air would escape and the floating island would float no more. It would sink."
"But then everybody on it would be drowned, wouldn't they?" said Bumpo.
"Oh no, not necessarily. That would depend on the depth of the sea where the sinking took place. The island might touch bottom when it had only gone down, say, a hundred feet. But there would be lots of it still sticking up above the water then, wouldn't there?"
"Yes," said Bumpo, "I suppose there would. Well, let us hope that the ponderous fragment does not lose its equilibriosity, for I don't believe it would stop at the centre of the earth—more likely it would fall right through the world and come out the other side."
Many other wonders there were which these men showed us in the central regions of their island. But I have not time or space to tell you of them now.
Descending towards the shore again, we noticed that we were still being watched, even here among the highlands, by the Bag-jagderags who had followed us. And when we put to sea once more a boatload of them proceeded to go ahead of us in the direction of Popsipetel. Having lighter
