Before introducing my readers to the Glacier des Bossons, which we were about to traverse, I may remark that opinions differ widely as to the difficulties and dangers of the undertaking. Some make very light of them, while others lead one to suppose that nothing short of cat-like agility, combined with heroic courage, could surmount the obstacles. The fact is, that leaving out of consideration experience, nerve, and surefootedness, the crossing of the Glacier may be comparatively easy one day, and beset with dangers another, the difficulties varying with the state of the ice, which is constantly changing. New crevasses are being formed, and those already in existence alter from day to day, so that great skill is required on the part of the guides to select a feasible route. Then, again, a snow bridge, consisting of a mere lump of snow jammed into the upper part of a wide crevasse, may bear one's weight or not according to a variety of circumstances, so after making due allowance for the disparagement of difficulties on the one hand, and the exaggeration of them on the other, it may fairly be said that walking over the Bossons is not exactly child's play.
At about eleven o'clock we stepped on the ice and were agreeably surprised to find that there was no tendency to slip, our boots having been well studded with nails before starting, and as yet the points had not become rounded through wear. For the first half hour walking was fairly easy, the surface, though irregular, being in no way difficult. After this we reached a queer-looking place, where the ice was split up with yawning crevasses whose edges twisted and turned in the most extraordinary way. Here there was a bit of climbing in which both hands and feet had to take their part. François helped S----, Jules helped me, and we each helped the other until all were safely across; and then turning to look at the gulf we had just passed we noticed that the _face_ of the ice (not the surface) was exquisitely tinted with the most delicate green and blue, deepening into azure until it was lost in the abyss.
Between this spot and the junction of the Glaciers des Bossons and Taconnaz, the ice was tolerably regular, and being free from snow there were no unseen crevasses to be guarded against; until we reached the "junction," where these mighty Glaciers part company. They seem to part in anger, for here the ice is in a frightful state of confusion, with the "seracs" (ice-bergs) heaped about in all directions, and with fathomless crevasses on every side.