very great. I should say that our velocity must have been about eighty leagues to the twenty-four hours."
I agreed that I thought this a fair calculation. There were then three hundred leagues to be added to the grand total.
"Yes, and the Central Sea must extend at least six hundred leagues from side to side. Do you know, my boy, Harry, that we have discovered an inland lake larger than the Mediterranean?"
"Certainly, and we only know of its extent in one way. It may be hundreds of miles in length."
"Very likely."
"Then," said I, after calculating for some minutes, "if your previsions are right, we are at this moment exactly under the Mediterranean itself."
"Do you think so?"
"Yes, I am almost certain of it. Are we not nine hundred leagues distant from Reykjawik?"
"That is perfectly true, and a famous bit of road we have traveled, my boy. But why we should be under the Mediterranean more than under Turkey or the Atlantic Ocean can only be known when we are sure of not having deviated from our course; and of this we know nothing."
"I do not think we were driven very far from our course: the wind appears to me to have been always about the same. My opinion is that this shore must be situated to the southeast of Port Gretchen."
"Good—I hope so. It will, however, be easy to decide the matter by taking the bearings from our departure by means of the compass. Come along, and we will consult that invaluable invention." The Professor now walked eagerly in the direction of the rock where the indefatigable Hans had placed the instruments in safety. My uncle was gay and light-hearted; he rubbed his hands, and assumed all sorts of attitudes. He was to all appearance once more a young man. Since I had known him never had he been so amiable and pleasant. I followed him, rather curious to know whether I had made any mistake in my estimation of our position. As soon as we had reached the rock, my uncle took the compass, placed it horizontally before him and looked keenly at the needle. As he had at first shaken it to give it vivacity, it oscillated considerably, and then
