It is quite surprising what a number of things the simple observation made by Faraday in 1846 enables us to explain. Bennen's instinctive act is justified by theory. The snow was fine in grain, pure, and moist. When pressed, the attachments of its granules were innumerable, and their perfect cleanness enabled them to freeze together with a maximum energy. It was this freezing which gave the mass its sustaining power.
Two fragments of ordinary table ice brought carefully together freeze and cement themselves at their place of junction; or if two pieces floating in water be brought together, they instantly freeze, and by laying hold of either of them gently you can drag the other after it through the water. Imagine such points of attachment distributed in great numbers through a mass of snow. The substance becomes thereby a semi-solid instead of a mass of powder. My guide, however, unaided by any theory, did a thing from which I should have shrunk, though backed by all the theories in the world.
After this we found the rocks on the ridge so shaken that it required the greatest caution to avoid bringing them down upon us. With all our care, moreover, we sometimes dislodged vast masses, which leaped upon the slope adjacent, loosened others by their shock, these again others, until finally a whole flight of them would escape, setting the mountain in a roar as they whizzed and thundered along its side to the snow-fields 4,000 feet below us. The day was hot, the work hard, and our bodies were drained of their liquids as by a Turkish bath. To make good our loss we halted at intervals where the melted snow formed liquid veins, and quenched our thirst. A bottle of champagne, poured sparingly into our goblets over a little snow, furnished Wenger and myself with many a refreshing draught. Bennen feared his eyes, and would not touch champagne. We, however, did not find halting good; for at every pause the muscles became set, and some minutes were necessary to render them again elastic. But for both mind and body the discipline was grand. There is scarcely a position possible to a human being which, at one time or another during the day, I was not forced to assume. The fingers, wrist, and forearm were my main reliance, and as a mechanical instrument the human hand appeared to me this day to be a miracle of constructive art.