Previous Explorations and Surveys. 127 



September steamer. Thanks to the abundant hospitality of 

 Captain Humphrey, superintendent of the Pacific Steam Whal- 

 ing company's cannery, our detention there was rendered far 

 from unpleasant, and the opportunity was afforded of exainining 

 this little known region. Taking passage September 21, on the 

 mail steamer Elsie, from Nutchek, we reached Sitka four days 

 later, connecting there with the steamer Mexico for Puget sound. 



Topography. 

 Cartographic Data.. 



The topographic data embodied in the accompanying ma}) 

 sheets (plates 19 and 20) are from the following sources : 



On sheet i the region from the head of Taku inlet to the mouth 

 of the Teslin, embracing Taku river, lake Ahklen, and Teslin 

 river, is mapped from my track survey made in 1891, which I 

 have already briefly described. The relief is indicated by sketch 

 contours with an approximate vertical interval of 250 feet. 



The portions of Pelly river shown on sheets i and ii are from 

 the track survey made in 1887 by Dr Dawson. The region from 

 the mouth of the Lewes, shown on sheet ii, across Chilkootpass 

 to Pyramid harbor, at the head of Lynn canal, is from the in- 

 strumental traverse made by Mr W. Ogilvie in 1887 and em- 

 bodied, together with Dawson's track surveys, in the map of a 

 portion of the Yukon district which accompanies the report on 

 an expedition to the Yukon district, Northwest Territory, and 

 adjacent northern portion of British Columbia, in 1887, by Dr 

 George M. Dawson.* 



The region embracing the head of Lynn canal. Chilkat river, 

 and the sources of Altsek and Tahkeena rivers is from the Karte 

 des Tschilkat-Gebietes mit dem Piissen zum Yukon.f Lake 

 Arkell and Tahkeena river are from data furnished to the Census 

 office by Mr E. J. Glave from surveys made by him in 1891. 

 Muir glacier is from a planetable survey made by Professor 

 Harry Fielding Ried in 1890, embodied in tlie map accompany- 

 ing a paper entitled Studies of Muir glacier, Alaska.^ 



■^ xlnn. Rep. Geol. Survey Canada, pt. B, Montreal, 1888. 

 t Nacli eigenen Aufnahmen im Jahre 1882 von Dr Arthur Krause, Ber- 

 lin, 1883. 



tNat. Geog. Mag., vol. iv, 1892. pi. 14. 



