But the traveller needs no such steps to lift him up to the grand conception of the divine Architect as he beholds the great white dome of Chimborazo. It looks lofty from the very first. Now and then an expanse of thin, sky-like vapor would cut the mountain in twain, and the dome, islanded in the deep blue of the upper regions, seemed to belong more to heaven than to earth. We knew that Chimborazo was more than twice the altitude of Etna. We could almost see the great Humboldt struggling up the mountain's side till he looked like a black speck moving over the mighty white, but giving up in despair four thousand feet below the summit. We see the intrepid Bolivar mounting still higher; but the hero of Spanish-American independence returns a defeated man. Last of all comes the philosophic Boussingault, and attains the prodigious elevation of nineteen thousand six hundred feet,--the highest point reached by man without the aid of a balloon; but the dome remains unsullied by his foot. Yet none of these facts increase our admiration. The mountain has a tongue which speaks louder than all mathematical calculations. There must be something singularly sublime about Chimborazo, for the spectator at Riobamba is already nine thousand feet high, and the mountain is not so elevated above him as Mont Blanc above the vale of Chamouni, when, in reality, that culminating point of Europe would not reach up even to the snow-limit of Chimborazo by two thousand feet. It is only while sailing on the Pacific that one sees Chimborazo in its complete proportions. Its very magnificence diminishes the impression of awe and wonder, for the Andes on which it rests are heaved to such a vast altitude above the sea, that the relative elevation of its summit becomes reduced by comparison with the surrounding mountains. Its altitude is twenty-one thousand four hundred and twenty feet, or forty-five times the height of Strasburg cathedral; or, to state it otherwise, the fall of one pound from the top of Chimborazo would raise the temperature of water thirty degrees. One-fourth of this is perpetually covered with snow, so that its ancient name Chimpurazu--the mountain of snow--is very appropriate. It is a stirring thought that this mountain, now mantled with snow, once gleamed with volcanic fires. There is a hot spring on the north side, and an immense amount of debris covers the slope below the snow-limit, consisting chiefly of fine-grained, iron-stained trachyte and coarse porphyroid gray trachyte; very rarely a dark vitreous trachyte. Chimborazo is very likely not a solid mountain; trachytic volcanoes are supposed to be full of cavities. Bouger found it made the plumb line deviate 7" or 8".