Lest I be accused of too freely seeing the beauties of the northern landscape, I venture in my defense the following graphic description of the Dyea Valley from the pen of another traveler and geologist, Prof. Israel Russell: "In the valley of the Taiya the timber line is sharply drawn along the bordering cliffs at an elevation of about twenty-five hundred feet. Above that height the mountain sides are stern and rugged; below is a dense forest of gigantic hemlocks, festooned with long streamers of moss, which grows even more luxuriantly than on the oaks of Florida. The ground beneath the trees and the fallen monarchs of the forest are densely covered with a soft, feathery carpet of mosses, lichens, and ferns of all possible tints of brown and green. The day I traversed this enchanted valley was bright and sunny in the upper regions, but the valley was filled with drifting vapors. At one minute nothing would be visible but the somber forest through which the white mist was hurrying; and the next the veil would be swept aside, revealing with startling distinctness the towering mountain spires, snowy pinnacles, and turquoise cliffs of ice towering heavenward. These views through the cloud rifts seemed glimpses of another world. Below was a sea of surging branches that filled all the valley bottom and dashed high on the bordering cliffs. Much space could be occupied with descriptions of the magnificent scenery about Lynn Canal, and of the wonderful atmospheric effects to be seen there, but the poetry of travel is foreign to these pages, and must be left for more facile pens." [Illustration: THE CHILKOOT TRAIL--POWER HOUSE OF THE AËRIAL TRAMWAY.]