LAND UNDER ICE
Suddenly the craft began to move. Slowly at first, then, with more speed it forged ahead through the water.
"Are we free?" asked Andy, starting up.
"Who started the machinery?" demanded the professor.
"No one," replied Jack. "We are all here. There is no one in the engine room."
"But we are moving," said Mark.
"It's dem sucker-fish!" exclaimed Washington. "Dey is takin' us off to der dens an' dere we'll all be eat up!"
"I'm afraid part of it is true," said Mr. Henderson. "The creatures are certainly making off with us. How powerful they must be!"
"Will dey take us to a cave?" faltered Washington. "Will dey eat us up?"
"I don't think they'll eat us up," spoke the inventor. "It would defy even their powerful sucking apparatus to bore through the steel sides of the Porpoise. What I am afraid of is that they may move us to some hidden depth where we will be caught under the rocks or in the ice, and so lose what little chance there is of getting free."