But these preliminary horrors, which announce to the seaman his approach to the world of ice and suffering, so far from deterring, increase his desire and determination to proceed. In the mystery of the Pole, there is, I know not what, of sublime horror and heroic suffering. Even those who have only gone as far North as Spitzbergen, retain in memory a profound impression of its drear and horrible sublimity. That mass of peaks, chains, and precipices, which, for four thousand five hundred feet, rears its icy front, is like a gigantic apparition, in that gloomy sea. Its glaciers flash forth living lights, dazzling flashes of the most brilliant colors, green, blue, and purple, contrasting marvellously with the uniform whiteness of the snow. During the nights, whose duration is not of hours, but of months, the _Aurora Borealis_, every now and then lights up the dreary scene in the strange splendors of a sinister illumination; vast and terrible bale fires, that, from time to time, light up the whole horizon, forming, with their magnificent jets of lurid lights, a fantastic Etna, that throws temporary and illusive light on that scene of eternal winter. All is prismatic in an atmosphere surcharged with icy particles, where the air is full of mirrors and little crystals. Hence, the most astonishing mirages, rendering one uncertain whether he may take the evidence of his own eyes as to the reality of any thing that he thinks he sees. Merely aërial reflections and colored mists appear solid masses, castles, cathedrals, islands,--anything; and what you see upright at one moment, is upside down a moment afterwards. The strata of air which produce these effects, are in constant revolution, the lightest ascends above the others, and in an instant the mirage changes form, color, size, and character. The slightest variation of the temperature, lowers, raises, or slopes, the huge mirror; the image becomes confounded with the object; they separate, disperse, another succeeds, and then a third, pale and feeble, appears, to disappear in its turn.