Now he comprehended that it was a stream of lava, thrown from the volcanic crater, and rushing down the side of the steep cliff.
In fact he had not time to reach the spot where he had left his companions, when it came hissing and rushing into the thicket, which he had just left.
All night a careful watch was kept, the raft with additional timbers secured to it being in readiness for the party to leave at a moment's notice.
Nothing more than the shocks, with the fall of additional lava occurred, however, to disturb the party.
"I doubt if anything serious happens, after all," said Harry.
Turk pointed to a couple of fissures in the side of the cliff.
"That looks bad," said he; "in my opinion, this island goes in less than forty-eight hours."
Good progress was made on the boat this day.
At night watching the volcano, Mary suddenly uttered a wild cry, and pointed up towards an overhanging rock beneath the crater.
"What is it?" was the question.