128 C. W. Hayes — Expedition through the Yukon District. 



The coast from Taku inlet to cape Spencer, and also from Icy 

 bay to the western edge of sheet ii, is from the general chart of 

 Alaska, number 900, issued by the United States Coast and 

 Geodetic survey, Washington, 1891. The topography of the 

 region shown on sheet ii between Selkirk, at the confluence of 

 the Pelly and Lewes rivers, and the mouth of the Nizzenah is 

 from my track survey, the greater part of which was a paced 

 traverse. 



The Yukon from Selkirk to the edge of sheet ii is from the 

 sketch survey by Charles A. Homan, published as sheet 5 of 

 map accompanying the report of a military reconnoissance 

 in Alaska, made in 1888 by Lieutenant Frederick Schwatka 

 (Washington, 1885). 



Chittenah river and the mount Wrangell region are from the 

 survey made by Allen in 1885 ; sheet 2 of map accompany- 

 ing the report of an expedition to the Copper, Tanana and KoyuT 

 kuk rivers, in the territory of Alaska, in the year 1885 by Lieu- 

 tenant Henry T. Allen (Washington, 1887). 



The coast from Icy bay to Yakutat bay, with the region to- 

 ward the north including mount St Elias, is from the surveys 

 of Kerr in 1890 and Russell in 1891, embodied in the maj) of the 

 mount St Elias region accompanying- a recent paper on mount 

 St Elias and its glaciers by Israel C. Russell.* 



Orographic Features. 



From the Adcinity of Frazer river, in southern British Columbia, 

 the western mainland range of the Cordilleran mountain system 

 follows the coast toward the northwest as far as the head of Lynn 

 canal. Here it becomes an interior range, while to the westward 

 its place next the coast is taken by the St Elias range. The 

 southern Alaskan coast mountains form a broad elevated belt 

 with many scattered peaks, of which none perhaps have an alti- 

 tude of more than 8,000 or 9,000 feet, while there is no dominant 

 chain. The southwestern front of the range rises abruptly from 

 the waters of the inland passage, forming a rugged barrier to the 

 interior. A few rivers have cut their channels through the range, 

 and it is penetrated varying distances by numerous deep fiords. 

 From the head of Lynn canal northwestward the range decreases 

 in altitude and probably spreads out and merges in the broken 



* Am. Jour. Sci., 3d series, vol. xliii, 1892, pi. iv. 



