From this point the direction of the Nautilus inclined toward the southwest. Her head was set for the Indian Ocean. Where would the fancy of Captain Nemo carry us next? Would he return to the coast of Asia, or would he approach again the shores of Europe? Improbable conjectures both, for a man who fled from inhabited continents. Then, would he descend to the south? Was he going to double the Cape of Good Hope, then Cape Horn, and finally go as far as the antarctic pole? Would he come back at last to the Pacific, where his Nautilus could sail free and independently? Time would show.
After having skirted the sands of Cartier, of Hibernia, Seringapatam, and Scott, last efforts of the solid against the liquid element, on the 14th January we lost sight of land altogether. The speed of the Nautilus was considerably abated, and with irregular course she sometimes swam in the bosom of the waters, sometimes floated on their surface.
During this period of the voyage, Captain Nemo made some interesting experiments on the varied temperature of the sea, in different beds. Under ordinary conditions, these observations are made by means of rather complicated instruments, and with somewhat doubtful results, by means of thermometrical sounding-leads, the glasses often breaking under the pressure of the water, or an apparatus grounded on the variations of the resistance of metals to the electric currents. Results so obtained could not be correctly calculated. On the contrary, Captain Nemo went himself to test the temperature in the depths of the sea, and his thermometer, placed in communication with the different sheets of water, gave him the required degree immediately and accurately.
It was thus that, either by overloading her reservoirs, or by descending obliquely by means of her inclined planes, the Nautilus successively attained the depth of three, four, five, seven, nine, and ten thousand yards, and the definite result of this experience was, that the sea preserved an average temperature of four degrees and a half, at a depth of five thousand fathoms, under all latitudes.
On the 16th of January, the Nautilus seemed becalmed, only a few yards beneath the surface of the waves. Her electric apparatus remained inactive, and her motionless
