Those were our lullabies that night.

Truly it required a sharp summoning of our fortitude not to feel a little home-sick.

But we went to sleep; at least I did, and slept a number of hours.
Voices roused me.

The captain was standing beside our mattresses.
"Wake up!" he was saying.

"Get up, and come on deck!" At the same moment I heard, indistinctly, a strange, rumbling sound.
"What is it?
what's the matter ?" cried Kit, starting up.
"Oh! don't be scared; we've been hearing it for some time," replied the captain.