Our first impulse, on arriving, was to enjoy the pleasure of throwing our eyes around, without encountering any obstacle. The world was at our feet. The sensations I felt were rather those of awe, than of sublimity. It seemed that I no longer trod on this globe, but that I was removed to some higher planet, from which I could look down on a scene which I had lately inhabited, and where I had left behind me the passions, the sufferings, and the vices of men. The houses of Chamouny, appeared like dwellings of ants, and the river which flows through the valley, seemed not sufficient to drown one of these pigmy animals. These emotions made me for some time insensible to the cold, but the piercing wind, which here had free scope, soon put an end to my waking dream, and bringing me back to the reality of life, enabled me to fix my attention on the objects around.

Notwithstanding the pleasure inspired by the view, it was certainly more terrific than beautiful. The distant objects appeared as if covered by a veil. To the north-west was the chain of Jura, with a mist hanging on its whole extent, which prevented the eye from penetrating into France, in that direction. On the north was the lake of Geneva; of a black colour, and surrounded by mountains, which we had thought high, while we were on its banks, but which now appeared insignificant, and the lake itself seemed scarcely capacious enough to bathe in. To the east were the only mountains that appeared of a considerable size; among which, the most conspicuous were the Jungfrau and Schreckhorn in Grindelwalden, and Monte Rosa, on the borders of Piedmont, which raises its hoary and magnificent head to within a few hundred feet of the level of Mont Blanc. The grand St. Bernard was at our feet, to the south east, scarcely appearing to rise to more than a mole hill's height above the adjoining vallies. The obstacles which Bonaparte had to encounter in leading his army over this mountain, even in winter, appeared so diminished in our eyes, that this vaunted undertaking lost, at the moment, in our estimation, much of its heroism and grandeur.

The view below and immediately around, presented a shapeless collection of craggy points, among which the 'Needles' were easily distinguished. We could hardly trust our senses, when we saw, beneath our feet, those rocks which, from below, appear higher than Mont Blanc itself, and which seem to penetrate into the region of the stars, and to threaten to 'disturb the moon in passing by.' Our view may be compared with that from the top of an elevated steeple over an extensive city, of which, except in the immediate neighbourhood, the roof only of the various buildings which compose it, are to be seen. The only green that we could perceive, was the narrow valley of Chamouny, and the two vallies by the side of St. Bernard. The portion of the earth that was not covered with snow, appeared of a gloomy and dark grey colour. The world presented an image of chaos, and offered but little to tempt our return to it.

The top of Mont Blanc is a ridge of perhaps 150 feet in length, and six or eight in breadth. It is entirely composed of snow, which is probably of immense depth, and is constantly accumulating. We could see no traces of the obelisk, 12 feet in height, which had been set up about ten years before. One of our guides was of the number of those who placed it, and designated to us its position. The highest rock which appears above the snow, is a small one of granite, 600 feet below the summit. We remained but a few minutes immediately on the top, as the wind blew hard and piercingly cold. Descending a few feet on the south side, we were partially sheltered from the wind, and here the sun shone with an excessive brightness, heating every part of the body exposed to his rays; but the least breath of wind, which reached us at intervals, was sufficient to make us shiver with cold. Farenheit's thermometer in the sun, was two degrees below freezing, and five and a half in the shade. It must be considered, however, that we suffered a much greater degree of cold than the thermometer indicated, from the rapid evaporation from the surface of our bodies, of the insensible transpiration occasioned by the dryness and great rarity of the surrounding air. This cause, familiar to physiologists, affected our sensations, and could not influence the thermometer. Most of our guides stretched themselves on the snow in the sun, and yielded to the strong inclination to sleep, which we all felt. Only one or two of them ate: the others, on the contrary, evinced an aversion to all kinds of food. We did not suffer the great thirst which Saussure and his party experienced; This we prevented by drinking vinegar and water, which was very grateful to us, instead of pure water. Our pulses were increased in frequency and fulness, and we had all the symptoms of fever. I occupied myself, notwithstanding the indisposition to action which I felt, in making a few observations, and in stopping and sealing very carefully a bottle which I had filled with the air of the summit, intended for examination on my return.

The colour of the sky had gradually assumed a deeper tint of blue as we ascended: its present colour was dark indigo, approaching nearly to black. There was something awful in this appearance, so different from any we had ever witnessed. There was nothing to which we could compare it, except to the sun shining at midnight. During some of the first attempts that were made to ascend Mont Blanc, this appearance produced so strong an effect on the minds of the guides, who imagined that Heaven was frowning on their undertaking, that they refused to proceed. The portion of atmosphere above us was entirely free from the vapours which the lower strata always contain, and was truly the 'pure empyreal,' seldom seen by mortal eyes. We had all our life beheld the sun through a mist, but we now saw him, face to face, in all his splendour. The guides asserted that the stars can be seen, in full day, by a person placed in the shade. It being near noon, and the sun almost over our heads, we could not find shadow to enable us to make the experiment.

The air on the top of Mont Blanc is of but little more than half the density of that at the surface of the ocean. According to the observations of Saussure, the height of the barometer on the summit, was sixteen and a half inches, while that of a corresponding one at Geneva, was twenty-eight inches. In consequence of this rarity of the air, a pistol, heavily charged, which we fired several times, made scarcely more noise than the crack of a postillion's whip.

We remained an hour and a quarter on the summit, part of which time was spent in useless regrets at not having waited to provide ourselves with instruments, as we were now so admirably situated to make with them a series of interesting experiments. Those which had suggested themselves, were principally concerning the absorption and radiation of caloric, and on the degree of cold produced by the evaporation of æther and other liquids. We found the descent more easy and much less fatiguing, though perhaps more dangerous than the ascent, on account of the greater risk of slipping. We passed under the place where the avalanche threatened us, with even more caution and more rapidity than before, as we found that a small piece had actually fallen, and covered our path since we had passed by. We arrived in about an hour at the 'Grand Plateau,' where we stopped to refresh ourselves, and gratify our returning appetites. We found the guide whom we had left, quite relieved. Here the sun, reflected from the walls of snow which surrounded us on three sides, poured down upon us with the most burning heat that I ever experienced from its rays, while our feet, cold from being immersed in the snow, prevented perspiration, and thus increased its power. Wherever its rays could penetrate, as between the cap and neckcloth, or even to the hands, it resembled the application of a heated iron. We were compelled, in addition to the assistance of our veils, to keep our eyes half closed, and even then the light was too powerful for them.

We however continued with ease and cheerfulness our descent, until an unexpected difficulty occurred. Where in the morning we had cut our footsteps with an axe, we now found the snow so much softened by the sun, that we sunk in it every third or fourth step, to the middle of the body. My friend and myself were more subject to this inconvenience than the guides, on account of the soles of our boots presenting a less surface to the snow, than those of their large shoes. After plunging on in this manner for some time, I began to despair of reaching our rock, which was yet four or five miles distant: but there was no alternative but to proceed. We therefore kept on, though with excessive fatigue. We frequently fell forward, and one limb being tightly engaged in the snow, was violently twisted, and constantly liable to be sprained; which in our situation would have been a serious misfortune. The crevices too were, from their edges having become softened, more dangerous than before. Perseverance and caution, however, triumphed over all these difficulties, and we reached the 'Grand Mulet,' half an hour after five, our boots, stockings, and pantaloons completely soaked. These were immediately stretched on the rock to dry, which the heat of the sun soon effected. I had the disappointment to find, on examining my pockets, that the bottle which I had so carefully filled with the air of the summit, had been broken in one of my frequent falls, and of course my hopes of making with it some interesting experiments, were now destroyed. The thermometer was also broken.

Notwithstanding the Herculean labour of the day, and the fatigue we experienced at the time, we had not been long on our rock before we felt strong and invigorated, as if just risen from a comfortable night's repose. This effect of the mountain air has often been remarked. We had even sufficient strength, and ample time to enable us to continue our descent with ease to Chamouny; but in the present softened state of the snow it would have been madness to attempt to cross the glacier, which we had found difficult and dangerous the preceding day, even before the sun's rays had affected it. In fact, while two of the guides were looking down on our path over the glacier, they saw a bridge of snow which we all crossed the day before, suddenly sink into the chasm beneath.

Imprisoned thus by the glacier, which was now all that intervened betwixt us and terra firma, we quietly resolved to remain where we were, and made the same arrangements for passing the night, as we had done the evening before. We were, however, at present better off: I mentioned that we had been so fortunate as to find a sufficient supply of water in the neighbourhood of our rock, in consequence of which most of the charcoal, we had brought to melt the snow, remained. With this we made a small fire at our feet, and by blowing almost constantly, kept it up during the night. It has been often observed, that as we ascend in the atmosphere, the difficulty of maintaining combustion, is proportionably increased. The cold was notwithstanding our fire, so great, that whenever I fell asleep, I was awakened in a few minutes to shiver and chatter my teeth. Our guides slept in the open air, huddled as close together as possible.