Fairweather is situated about two hundred miles southeast of Mount St. Elias, its hoary head being often visible a hundred miles and more at sea; rising above the fogs and clouds, its summit is recognizable while all other land is far below the horizon. We were told that when the earthquake occurred at Sitka in 1847, this mountain emitted huge volumes of smoke and vapor. The force of volcanic action in Alaska is, however, evidently diminishing, though occasional slight shocks of earthquakes are experienced, especially on the outlying islands of the Aleutian group and near the mouth of Cook’s Inlet. Besides these loftiest mountains named,—“Rough quarries, rocks, and hills whose heads touch heaven,”—Mount Cook, Mount Crillon, and Mount Wrangel should not be forgotten. Lieutenant H. T. Allen, U. S. A., makes the height of the latter exceed that of Mount St. Elias, but we think it very questionable. This officer’s statement that Mount Wrangel is the birthplace of some of the largest glaciers known to exist seems much more likely to be correct. In this region, therefore, this far northwest territory of the United States, we find the highest elevations on the North American continent. The mountain ranges of California and Montana unite with the Rocky Mountains, and turning to the south and west form the Alaska Peninsula, finally disappearing in the North Pacific, except where a high peak appears now and then, raising its rocky crest above the sea, like a giant standing breast-high in the ocean, and thus they form the Aleutian chain of treeless islands, which stretch away westward towards the opposite continent. That these islands are all connected beneath the sea, from Attoo, the most distant, to where they join the Alaska Peninsula, is made manifest by the exhibition of volcanic sympathy. When one of the lofty summits emits smoke or fiery débris the others are similarly affected, or at least experience slight shocks of earthquake. So the several islands which form the Hawaiian group are believed to be joined below the ocean depths, and several, if not all, of the islands of the West Indies are considered to be similarly connected.