In June 1786, six men of the valley of Chamouny, renewed the effort to reach the summit, but fatigue and cold forced them to renounce it; one of them, however, Jacques Balmat, separating from his companions to search for crystals, and having lost himself, was prevented by a storm from rejoining them, and compelled to pass the night on the snow, unprovided and alone; youth, however, and the vigour of his constitution, saved his life. In the morning he perceived the top at no great distance, and having the whole day before him to provide for his descent, he examined leisurely the approaches to it, and observed one, that appeared more accessible than any he had hitherto seen. At his return to Chamouny, he was taken ill, in consequence of his great exposure, and was attended by Dr. Paccard, the physician of the village, to whom he communicated his discovery, and offered, in gratitude for his care, to guide him to the summit of Mont Blanc.

In consequence of this, Jacques Balmat and Dr. Paccard, set out from Chamouny the 7th of August, the same year, and slept on the top of the Montagne de la Côte. The next day they experienced great difficulties and excessive fatigue, and were long doubtful of the ultimate event of their enterprise; but finally, at half past 6, P. M. they reached the pinnacle of the mountain, in sight of many visitors, who were at Chamouny, watching their progress with telescopes. The cold was so intense, that provision was frozen in their pockets, the ink congealed in their ink horns, and the mercury in Farenheit's thermometer, sunk to eighteen and a half degrees. They remained about half an hour on the top, regained at midnight the Montagne de la Côte, and after two hours repose, set out for Chamouny, where they arrived at eight in the morning, with their lips swollen, their faces excoriated, and their eyes much inflamed; and it was some time before they recovered from these disagreeable effects.

As soon as the intelligence of this success reached Saussure at Geneva, he determined on making a similar attempt: which he in fact did the same year, but was compelled by unfavourable weather to return. He was, however, not discouraged, but as the season was now far advanced, he postponed his operations until the ensuing summer. Accordingly, on the 1st of August, 1787, he again set out from Chamouny, accompanied by his servant, and eighteen guides, carrying a tent, a bed, ladders, cords, provisions, and philosophical instruments.

The party arrived early the same day at the Montagne de la Côte, where they passed the night. The next day, notwithstanding an increase of dangers and difficulties, they passed under the Dome de Gouté, and reached a platform, or small plain, at the height of 11,790 feet above the sea, where they pitched their tent in the snow, and passed the night. The following morning, (August 3d) the snow was so hard, and the ascent so steep, that they were compelled to cut their footsteps with a hatchet, and it was only by proceeding with the greatest caution, that they were enabled to pass this dangerous acclivity with safety. They, however, persevered, and reached the summit about an hour before noon, in view of many persons who were observing them from Chamouny. M. Saussure turned his eyes to the house where his mother and sisters were watching his progress with a telescope, and had the satisfaction of seeing the waving of a flag, which was the signal they had agreed to make, as soon as they should be assured of his safety. The latter part of his ascent was the slowest and most fatiguing, owing to the difficulty of breathing, occasioned by the rarity of the air: the stoutest of his guides could not take more than thirty steps, without stopping to take breath. No one had the least appetite, but all were much tormented by thirst. The guides pitched the tent, in which M. Saussure remained four hours, making a number of observations. At half after three, the party began to descend, and slept lower 1100 feet than the preceding night. The next day they arrived, without any accident, at Chamouny.

This successful expedition of Saussure, and the interesting account he published of it, inspired many persons with a wish of accomplishing the same task; but they were generally soon deterred by an examination into the difficulties attending its execution, and returned satisfied with a view from the vallies below, of the terrific glaciers, and everlasting snows, which defend the approaches to the summit. The following are the principal attempts that have since been made, and it will be perceived that of these few, only a part have succeeded.

On the 8th of August, 1787, five days after M. Saussure's return, Col. Beaufoy, an Englishman, set out from Chamouny for Mont Blanc, accompanied by ten guides. He reached the top the following day, and returned the third day to the village, with his face and eyes so inflamed, that he nearly lost his sight in consequence. As he was not properly provided with instruments, he was unable to add much to the observations which had been made by Saussure. He, however, determined the latitude of the summit to be 45°, 49´, 59´´.

The year following these two journeys, (1788,) Mr. Bouritt, of Geneva, in company with his son, two other gentleman, and a number of guides, attempted the ascent of Mont Blanc. The party was dispersed by a storm, and only Mr. Bouritt, his son, and three guides, succeeded in reaching the top, where the violence of the cold compelled them to abridge their stay to a few minutes. While there, Mr. Bouritt thought he perceived the sea in the direction of Genoa; but the immense distance rendered the objects at the horizon, too indistinct to be certain of it. The whole party returned to Chamouny in a terrible condition. One of Mr. Bouritt's companions, who had lost himself, suffered dreadfully, as well as the guides who were with him, and returned with his feet and hands frozen, while some of the company, who were more fortunate, had only their fingers and ears in the same condition. Mr. Bouritt was obliged to wash for thirteen days in ice water, to restore the use of his limbs, which had suffered from the extreme cold.

In 1792, four Englishmen undertook the same journey, but were prevented, by an accident, from proceeding farther than the Montagne de la Côte, where, unfortunately, one of the guides had his leg broken, and another his skull driven in: they themselves were all more or less wounded. A false step of one of the foremost of the party upon a loose rock, which brought it and a number of others down upon his companions, was the cause of this accident.

M. Forneret, of Lausanne, and M. d'Ortern set out on the 10th of August, 1802, with seven guides, for Mont Blanc, and notwithstanding a storm, reached the summit the following day. They remained there only twenty minutes, and returned on the 12th to Chamouny, protesting that nothing in the world could tempt them to undertake again the same expedition.

In August, 1808, Jacques Balmat, surnamed Mont Blanc, from his having been the first to discover the way to the summit, safely conducted thither fifteen of the inhabitants of Chamouny, one of whom was a woman.