Let us hope that it will not come in our day.
But it can be seen that Prof. Von Bulow looked forward with immense interest to the possible revelations in store.
He had already pictured out cities and palaces, valleys and towns, forests and mountains under the sea.
Not until he was assured that he was at the entrance to the great Atlantic Valley did Frank make preparations to descend.
Then he made deep soundings, and becoming satisfied that he had reached the right point, the descent was made.
The travelers took a final walk on deck, and then the doors were hermetically closed.
Frank stepped into the pilot-house and pulled the reservoir valve.
Instantly the Dart began to settle.
Down she went with a graceful plunge. There was a peculiar jolting, jarring motion as she displaced the water.
Then the electric lights flashed forth. Those on board beheld a wonderful sight.