It was at the observatory of Gaurisankar especially that the study of the comet’s elements was prosecuted. On this highest elevation of the globe, at an altitude of 8000 meters, among eternal snows which, by newly discovered processes of electro-chemistry, were kept at a distance of several kilometers from the station, towering almost always many hundred meters above the highest clouds, in a pure and rarified atmosphere, the visual power of both the eye and the telescope was increased a hundred fold. The craters of the moon, the satellites of Jupiter, and the phases of Venus could be readily distinguished by the naked eye. For nine or ten generations several families of astronomers had lived upon this Asiatic summit, and had gradually become accustomed to its rare atmosphere. The first comers had succumbed; but science and industry had succeeded in modifying the rigors of the temperature by the storage of solar heat, and acclimatization slowly took place; as in former times, at Quito and Bogota, where, in the eighteenth and nineteenth centuries, a contented population lived in plenty, and young women might be seen dancing all night long without fatigue; whereas on Mont Blanc in Europe, at the same elevation, a few steps only were attended with painful respiration. By degrees a small colony was installed upon the slopes of the Himalayas, and, through their researches and discoveries, the observatory had acquired the reputation of being the first in the world. Its principal instrument was the celebrated equatorial of one hundred meters focal length, by whose aid the hieroglyphic signals, addressed in vain for several thousand years by the inhabitants of the planet Mars to the earth, had finally been deciphered. While the astronomers of Europe were discussing the orbit of the new comet and establishing the precision of the computations which foretold its convergence upon the earth and the collision of the two bodies in space, a new phonographic message was sent out from the Himalayan observatory: “The comet will soon become visible to the naked eye. Still of greenish hue. Its course is earthward.”