ALASKA 385 



131. Canyons in young rock series, 1 mile below Tramway bar; looking north- 



west (No. 242). 



132. Sluicing the gold placers by Elsingson party on claim 11, Myrtle creek ; look- 



ing north-northeast (No. 229). 



133. Gold-bearing schist, showing cleavage and attitudes of rock in bed of Myrtle 



creek ; looking northeast (No. 224). 



134. Young rock series of sandstone and conglomerate with some lignite, 8 miles 



above camp 38; looking west-northwest (No. 238). 



135. Elephant mountain ; from 3 miles above mouth of Koyukuk river; looking 



southwest (No. 377). 



136. View down Koyukuk river, showing low plateau topography, ripple-marks, 



and native village in distance; 135 miles above mouth of river (No. 353). 



137. View down Yukon river, showing Nulato plateau, from J mile above edge 



of flats, on right bank of Yukon, between Koyukuk station and Pickart's 

 coal mine; looking southwest (No. 390). 



138. Up Koyukuk river, showing flats with rock plateau and mountains in rear ; 



26 miles above mouth of river; looking west-northwest (No. 370). 



139. Bergman and edge of young rock series plateau ; opposite Bergman ; looking 



north-northwest across Koyukuk river (No. 280). 



140. Mountainous topography of Nome River valley (No. 433). 



141. Snake River valley in vicinity of Nome, showing merging of tundra into 



alluvium (No. 438). 



142. Part of Nome tundra, Nome Sledge island and Bering sea in distance (No. 



424). 



143. Edge of tundra and beach of Nome (No. 442). 



144. Nome beach diggings (No. 440). 



145. Nome beach gravels, auriferous ruby sand at base (No. 443). 



146, 147. View across Glacier creek, valley of upper Snake river near Nome. 



148. Anvil Creek valley near Nome. Bering sea and tundra in distance. 



149. Anvil Creek diggings, Nome. 



Arizona and New Mexico 



Photographed by W. H. Jackson, Detroit, Michigan 



Lantern slides, 50 cents each 



150. Grand canyon of the Colorado. Size, 21 by 74 inches; mounted, $17.50; 



not mounted, 115.00. 



Photographed by J. K. Hitlers 

 11 by 14 inches. Negatives in United States Geological Survey 



151. Grand canyon of the Colorado at the foot of the Toroweap, in Arizona. The 



outer canyon, of which only the northern wall is seen, is here 5 miles 

 wide and 2,000 feet deep. The inner gorge, cut in the floor of the outer 

 one, is 3,000 feet deep and from 3,500 to 4,000 feet wide from crest to crest. 

 Published in Tertiary History of the Grand Canyon District, by Captain 

 C. E. Dutton, page 86 (No. 80). 



152. Shinimo altar from the brink of Marble canyon of the Colorado river, Ari- 



zona (No. 81). 



153. Canyon de Chelly, Arizona (No. 118). 



