Chapter 10 The Underwater CoalfieldsTHE NEXT DAY, February 20, I overslept. I was so exhausted from the night before, I didn't get up until eleven o'clock. I dressed quickly. I hurried to find out the Nautilus's heading. The instruments indicated that it was running southward at a speed of twenty miles per hour and a depth of 100 meters. Conseil entered. I described our nocturnal excursion to him, and since the panels were open, he could still catch a glimpse of this submerged continent. In fact, the Nautilus was skimming only ten meters over the soil of these Atlantis plains. The ship scudded along like an air balloon borne by the wind over some prairie on land; but it would be more accurate to say that we sat in the lounge as if we were riding in a coach on an express train.