"That's not an island!" I cried sceptically.
"It's nothing else," shouted the Professor, with a loud laugh.
"But that column of water?"
"Geyser," said Hans.
"No doubt it is a geyser, like those in Iceland."
At first I protest against being so widely mistaken as to have taken an island for a marine monster. But the evidence is against me, and I have to confess my error. It is nothing worse than a natural phenomenon.
As we approach nearer the dimensions of the liquid column become magnificent. The islet resembles, with a most deceiving likeness, an enormous cetacean, whose head dominates the waves at a height of twenty yards. The geyser, a word meaning 'fury,' rises majestically from its extremity. Deep and heavy explosions are heard from time to time, when the enormous jet, possessed with more furious violence, shakes its plumy crest, and springs with a bound till it reaches the lowest stratum of the clouds. It stands alone. No steam vents, no hot springs surround it, and all the volcanic power of the region is concentrated here. Sparks of electric fire mingle with the dazzling sheaf of lighted fluid, every drop of which refracts the prismatic colours.
"Let us land," said the Professor.
"But we must carefully avoid this waterspout, which would sink our raft in a moment."
Hans, steering with his usual skill, brought us to the other extremity of the islet.