In the midst of this ravine, into which so many springs are emptying themselves, is a little stream, which, starting from the head of the canon quite cool and pure, receives all their mingled waters, and gradually increases in heat and abominable taste, until at last it defies description. Its stones and the rocks that line its banks, owing probably to the protection of the cooler water, are tolerably firm in texture, all other parts of the ravine being burned to a powder which crumbles in the hand, or, when mixed with water, forms an ooze or clay. Many of these stones by the sides of this little stream are banded with colors like the Pictured Rocks of Lake Superior (to compare great things with small), and probably from the same cause. These beautiful cliffs, the Schwee-archibi-kung of the Indians, are colored by percolations of surface-water, by which the coloring matter of various minerals and acids is brought to the face of the precipice, and it is reasonable to suppose that the drainage of the mountains behind the Devil's Canon, sinking to similar beds of minerals, is thrown out by the volcano below in the shape of steam or mineral springs. It is impossible to drill a hole two feet deep in the side of the ravine without provoking a little jet of steam. Now, Daubeny, who is the highest authority on volcanoes, states that the greater part of their ascending vapor is mere steam, and that in 'Pantellaria (a volcanic island near Sicily) steam issues from many parts of this insular mountain, and hot springs gush forth from it which form together a lake six thousand feet in circumference.' Similar jets of steam and hot water are observed at St. Lucia, near the crater Oalibou, where also there is a continual formation of sulphur from the condensation of the vapors, a phenomenon which is lavishly displayed in the Devil's Canon, and in fact around most known volcanoes. The writer observed it fully two miles from the active volcano of Kilawea, forming a fine sulphur bed, and a body of steam so dense that rheumatic natives of Hawaii were in the habit of using it as a vapor bath.