AN ACCOUNT OF TWO RECENT AT TEMPTS TO ASCEND MONT BLANC, THE RUSSIAS. (From the Bibliotheque Universelle of August 1820.) FROM the first period of my acquaintance with the journeys and the labours of the celebrated Saussure of Geneva, I have always felt a strong inclination to visit the valley of Chamouny, and, above all, to see Mont Blanc, that king of mountains, conquered by the perseverance of this indefatigable investigator of nature. At last, in the present year, I had an op; portunity of being at Chamouny, and of admiring the wonders of this country. I have seen the whole chain of mountains which surround it; I have visited the rivers of ice which descend from the eternal snows in which they are again immersed; and often I fixed my eyes upon the most elevated point of Europe, without daring, so many difficulties presented themselves, to form an idea of ascending to its summit. However, having had occasion to pass by the baths of St Gervais, I learned that two people of the country had succeeded in reaching the top of Mont Blanc, and descended the same day to Prarion, the place of their departure. This report inspired me with the desire of attempting this new route, which, according to the assertion of these people, was easier, less dangerous, and much shorter than that of Chamouny, which had always been followed since the time of Saus sure. As the same persons had formed the design of ascending a second time to the summit of Mont Blanc, for the purpose of dissipating doubts which had been raised at Chamouny, of the possibility of getting to the top by the way of St Gervais, I profited by this favourable opportunity of ascending at the same time. The Cures of St Gervais and St Nicolas de Verosse offered to accompany me; and the better to succeed, we proposed to divide the ascent into two days, passing the night near the Pierre-Ronde. † Prarion is the mountain which separates the valley of Chamouny from that of Mont-Joie, where the Gervais is situated. A name applied to the rocks situated under the point called the Needle of Gouté. VOL. VII. We arrived there on the 3d of August, the anniversary of the ascension of Saussure, passing by the villages of Bionnay and Bionnassay, the hill or rather the plain of Lacha, and going along the side of Mont-de-Lar. We stopped at Pierre-Ronde at half-past seven, not far from a torrent which descends from the glacier of Bionnassay, to pass the night under the shelter of some rocks. The night was uncommonly fine; and next morning, at half-past two, we again began our march, by moonlight, traversing an acclivity of ice till we came to TêteRousse. About a quarter before five o'clock, the sun began to illuminate successively the peaks of the mountains on the side of Sallenches, whilst their bases were yet in darkness. The effect of this partial illumination was very fine. To us, placed in obscurity, it seemed as if a number of torches had been lighted, one after another, below us. From the pinnacles of Tête-Rousse, called by Saussure the bases of the Needle of Gouté, † we directed our course towards this point itself, at the foot of which we arrived twenty-two minutes past five; but to gain the ridge by which it was attainable, we had to traverse in a horizontal line, and by notches cut in the ice by an axe, a slope of ice of from 45° to 50°, which proved extremely difficult. After about three hours painful walking among loose stones, we reached the summit of the needle at the height of 1980 toises, ten minutes before nine o'clock. Here we rested for a little ; and after having taken every precaution against the cold, and the rays of the sun reflected by the snow, we began our march towards the Dôme du Gouté at half-past nine, and at halfpast eleven we arrived at its top. Professor Pictet of Geneva, who was this day at Chamouny with Miss Edgeworth and other friends, observed us with his telescope from the Croix de Fleigère, and traced us through part of this route. A name given to rocks situated higher up than those of Pierre-Ronde. + See Voyages dans les Alps, § 1114. A mountain to the N. W. of Mont Blanc, and of the Dome du Gouté is thus named. Its face is precipitous almost to the peak, and broken by chasms covered by ice, called couloirs. Tt 330 Mont Blanc. It was in this two hours' march that I first felt the effect of rarefied air on my strength. It was absolutely impossible for me to walk more than forty paces, without stopping about two minutes to take breath; and, arrived at the summit of the Dôme, (2200 toises,)* I felt myself so exhausted, that half-an-hour's repose at least was necessary to enable me to continue the ascent to the top of Mont Blanc.. I found, besides, on making the calculation, that it would be impossible to reach the summit, and descend again to the Needle of Gouté before night; and I therefore A mist which resolved to return. had formed around the top contributed to fix me in this determination. The rest of the party were also obliged to renounce their first intention, and we all returned together. Having taken a rest at the edge of the Needle of Gouté, we began, about halfpast two, to descend. The descent was infinitely more painful and dangerous than it had been on our way up, on account of the thawing of the ice, which in the morning had contributed to consolidate the detached stones, that now gave way continually under our feet. The ridges of the Needle are in some parts almost perpendicular, and if we had made a false step, we should have rolled down to the glacier of Bionnassay. To give an idea of the danger in which we were, it may only be remarked, that one of our guides wept like a child when we began our descent. No accident, however, occurred, although the stones, at every instant, receded from our feet. Over the slope of ice and snow which we had traversed in the morning, the stones which were loosened from above rolled with such rapidity, that they occasioned a whistling in the air; and we preferred to descend, although with much difficulty, towards the glacier of Bionnassay, upon the snow of which we slid I did not take the height of the Dome myself. I had a new portable barometer, made at Geneva, but the reservoir was too little to hold all the mercury which descended from the tube at this height. This remark should teach the makers of these instruments to try them always under the receiver of an air pump, to ascertain that the mercury comes down as low at least as the scale. down to very near the place where we My journey convinced me of the In turning over the works of M. de Saussure, I find that he had, in 1785, attempted the same route; but the dangers which he met with in the ridge of the Needle of Gouté hindered him from going further; he did not even go the length of its summit, (see his Travels, 1117.) This led me to believe that the road of Chamouny, by which he ascended, though not so direct, was at the least more commodious; and I was anxious to find an occasion to try it, that I might be able to decide which of the two roads merited the preference. Soon after, I learned that some gentlemen of Geneva had also expressed a wish to go to the summit of Mont Blanc. One of these was M. Selligue, mineralogist and instrument-maker, who informed me that he had invented a barometer on a new principle, which he wished to try in these moun tains. As the claim of Mont Blanc to be the highest mountain in Europe has been recently disputed, and as, since ses. I have found its height to be 998 tei the time of Saussure, none of the tra vellers who have ascended it have taken the trouble to measure it of new, I was anxious to determine its height by the assistance of many barometers. Professor Th. de Saussure had the goodness to lend me an excellent portable barometer, made at Turin, divided the length of 14 inches. The reservoir for the mercury was a cylinder of glass, and the level was regulated by a sight and a piston. M. Selligue had prepared a syphon barometer; and in case these two barometers should be deranged in the ascent, I filled two tubes of glass from 18 to 20 inches in length, bent at the extremity as a syphon, with mercury, and after having made it boil, I shut the opening in such a manner, that the variations in the volume of mercury did not permit air to enter into the long branch. Arrived at the height, I had nothing to do but to draw out the cork, and allow part of the mercury to escape, and measure the column which remained in the tube. I had thus four barometrical instruments to measure the height of the summit. In my first ascent, I was surprised at the effects which the rays of the sun had on the skin, and I hoped to make some experiments upon the strength of the rays concentrated by lenses. Colonel Beaufoy had already paid some attention to this subject, and I believe, with him, that these experiments may become interesting in the theory of light and heat. I purposed also to make upon my companions and myself, observations relative to the effect of rarefied air upon animal organization, and, after what I had observed during my first ascent, I flattered myself that I might obtain some results not altogether useless in physiology. I had prepared a flask of lime-water to discover the presence, and, by approximation, the quantity of carbonic acid in the air of these high regions, and to see if, at that height, the air expired was charged with carbon in the same proportion as in regions where, at each inspiration, there enters about a third more of oxygen with the same quantity of atmospheric air. I expected also to be able, at this height, to abstract the blood of some animal, to judge, by its colour, if it had been sufficiently decarbonized in the lungs. I also filled four flasks with alcohol, which, poured upon a sponge, might serve me for burring; and I wished to carry back in these flasks, hermetically sealed, the air of the summit, for the purpose of analysis. A Papin's digester, of a very simple construction, was intended to prove the possibility of cooking meat at great heights. The monks of Great St Bernard complain that their victuals are never dressed enough. The reason is, that the water in open vessels, being less compressed by the atmosphere at great heights than in the plain, boils at a less degree of heat. A separate apparatus was destined to measure the exact temperature at which water boiled at different heights. A little table, with a Camera Lucida, was prepared by M. Selligue, to sketch a panorama from the top of Mont Blanc. Professor Pictet furnished me with the instruments necessary for observing and measuring the temperature, the electricity, and the humidity of the atmosphere; a compass arranged so as to observe the azimuths; a telescope with level; a pocket sextant of Troughton, &c. * Two English gentlemen, Mr Joseph Dornford and Mr Gilbert Henderson, both from the University of Oxford, the first of whom had, in England, formed the project of ascending Mont Blanc, were eager to` . join us, and we departed from Geneva on the 16th of August, at three o'clock P. M. for Chamouny, where we arrived the next day, at two, at the Union Hotel, kept by M. Charlet; (bar. 95. ther. 19° R.) We consulted afterwards with Joseph-Marie Coutet, and Mathieu, sons of Pierre Balmat, whom M. Pictet had recommended to us as guides, equally robust and trustworthy. They advised us to take twelve guides, viz. three for each tra On our departure from Geneva, the barometer was 26.11-thermometer 24° R. At Bonneville, 10 minutes before 7, bar. 26.10-therm. 28°. At St Martin, at mid night, bar. 26.6,8-therm. attach. 17°the other 13o. On the 17th, at 6 A. M. at the same place, therm. 10o. At Servoz, at 20 minutes past 11, bar. 25.8,8-therm. 20°. 332 out. Mont Blanc. veller. We entrusted the choice of From the cottage we mounted in a tach. 129-the other 15°.) At ten Sometimes those in the rear of a party find these bridges pierced by the footsteps of the person who has preceded them; in this case, it is proper to diverge a little to one side. In spite of all these difficulties and dangers, we crossed the glacier without the slightest accident. At a quarter past one we were above the junc tion of the glacier of Bossons with that of Tacconay, between which is the mountain of Cote, and, after having ascended a slope of snow, inclined about 56°, we arrived, at three o'clock, at the foot of the Grand-Mulet, upon its west side. The rocks which appear in the middle of the ice possess here as little solidity as those of the Needle of Gouté; and we mounted so slowly, that it was half-past four when we arrived at the most elevated part of the Grand-Mulet. A black cloud which was now forming on the west side decided us to remain here for the night. (Bar. 19.3,6.-therm. 10°.) The top of this rock assuming the form of the letter L, that is to say, being at a right angle, we arranged our ladder and some sticks, so as to form a hypotheneuse; and a little straw, spread on the horizontal part of the rock, formed a mattrass, upon which we lay down side by side. Scarcely were we covered, when it began to rain, and soon after the thunder reverberated majestically around us. I attempted to expose the point of the electrometer beyond our tent, but the balls were put in motion with such violence, that I soon desisted. The night was stormy; but the next morning the rain had ceased, and the air was so pure, that we saw the Lake of Geneva, and other distant objects, very distinctly. We hoped that towards mid-day the atmosphere above would become clearer; but as this was still uncertain, we resolved to bivouac another night in our tent, after the manner of the Cossacks. Coutet sent two of our men to the Priory for an addition to our provisions; and during the lucid intervals I employed myself in again boiling the mercury in one of my barometrical tubes, which had been injured. We here tried the temperature of boiling water, which we found to be 72°. I also made some arrangements to set off fireworks upon our return from the summit; for I was curious to know if rockets rose well in air so very rare. I had also luminous balls and stars prepared with arsenic; Bengal fire prepared with antimony; and a bag with a mixture of nitre, sulphur, and orpiment, to illuminate the top of Mont Blanc, and the pinnacles of the surrounding mountains. At five o'clock it began to hail, and from this time to midnight the atmosphere was cloudy; but on the 20th at one o'clock in the morning the firmament appeared studded with stars, although the valley was yet concealed in mist. Coutet having gone out to examine the weather, told us that it promised well; but that it would be prudent to wait yet a little longer before deciding upon ascending. About five o'clock the top was already lighted by the sun, the air was serene, it was perfectly calm, and our guides announced to us that we might begin our march. M. Selligue, who had been for sometime indisposed, and who feared the return of rain before the end of our journey, preferred to remain at the Grand-Mulet. Two of our guides who had never been at the top were asked by Coutet to remain with Mr S.-but they refused; however, two of the others consented to stay behind. We departed from the Grand-Mulet at twenty minutes past five, viz. Messrs Dornford, Henderson, and myself, with eight guides, (Ther. +2°.) We now entered on the snow, which was here pretty deep, and directed our course towards the Needle of Goûté, and afterwards ascended in a zig-zag direction, to avoid the chasms or almost perpendicular slopes towards the summit, which we now saw from this side at a quarter before seven. The day was delightful; and far below us were seen the white clouds, like a tranquil sea, pierced here and there by the pinnacles of the highest mountains, which Coutet named to me Fours, the Needle of Varens, Buet, &c. About seven o'clock the mists began to dissipate, and we could now see the Priory. As we ascended we found the snow harder and of less depth; and it appeared as if it had not snowed for some time. At twenty minutes past seven we arrived at the first of three platforms of snow, which succeed one another in the space between the top of Goûté and Mont Maudit. After having traversed this first platform, we mounted at a quarter before eight an inclined plane of from 25° to 30°, that led to a second, which we began to cross at ten minutes past eight, having on our right those great seracs+ of ice, *The eastern shoulder of Mont Blanc is thus named. Seracs are parallelopipeds, cubes, and other regular forms, which the ice and snow takes at great heights, and are thus named from a species of white cheese of a similar appearance made in the mountains. |