As for the ichthyosaurus--has he returned to his submarine cavern? or will he reappear on the surface of the sea? CHAPTER XXXIV. THE GREAT GEYSER Wednesday, August 19 .--Fortunately the wind blows violently, and has enabled us to flee from the scene of the late terrible struggle. Hans keeps at his post at the helm. My uncle, whom the absorbing incidents of the combat had drawn away from his contemplations, began again to look impatiently around him. The voyage resumes its uniform tenor, which I don't care to break with a repetition of such events as yesterday's. Thursday, Aug. 20.--Wind N.N.E., unsteady and fitful. Temperature high. Rate three and a half leagues an hour. About noon a distant noise is heard. I note the fact without being able to explain it. It is a continuous roar. "