438 N. H. DARTON — CATALOG OF PHOTOGRAPHS 



1220. Cascade pass, Cascade range. Cliffs of hornblendic gneiss immediately south 



of the pass, about 3,000 feet in height, exhibiting vertical jointing (No. 201). 



1221. Cascade pass, Cascade range. Glacier and basin at the head of Stehekin 



river (No. 202). 



1222. Basin peak, Cascade range, north of Cascade pass. View of doubtful lake 



and slope of the mountain, showing joint systems, which are commonly 

 mineralized (No. 204). 



1223. Cascade pass, Cascade range. Typical glacier of the northern Cascade range, 



showing a neve and the incipient ice-stream, with crevasses (No. 207). 



1224. Detail of number 1123, showing stratification of the ice and structure of the 



glacier. Taken from the same point as number 1123 with long-focus lens 

 (No. 208). 



1225. Cascade pass, Cascade range. View from an elevation of about 7,500 feet 



southeastward down the Stehekin valley. The mountain summits fall into 

 a general plane, which was a lowland of late Pliocene time and is now 

 elevated 8,000 feet above sea and profoundly dissected (No. 210). 



1226. Cascade pass, Cascade range. A typical glacier of the high Cascades, show- 



ing the character of crevassing and terminal moraines (No. 212). 



1227. Navarre coulee, lake Chelan, Washington. Torrent wash due to cloud- 



burst on granite slopes in arid climate (No. 167). 



1228. Columbia valley, Washington, southeast of lake Chelan ; looking northeast 



across the river to the terraces of Pleistocene age and the high plateau of 

 Miocene basalt (No. 163). 



1229. Columbia river, east of lake Chelan. View down the valley from terrace to 



3 miles north of outlet of the lake. Terracing on the east bank of the 

 river is due to the occupation of the valley by a lobe of the Okanagan 

 glacier (No. 221). 



1230. Gravel terraces of stream origin in the delta of Chelan river, at its junction 



with the Columbia (No. 227). 



1231. Columbia river, east of lake Chelan, showing sand dunes resulting from 



floods and sediment of the Chelan river (No. 228). 



1232. Chelan falls, Columbia river, looking south from near the outlet of lake 



Chelan. The valley and. foreground were occupied by a lobe of the 

 Okanagan glacier, which extended downstream to the even- topped terrace. 

 The terrace is 600 feet above the Columbia, and represents a filling during 

 the Glacial epoch which has subsequently been in large part removed 

 (No. 231). 



1233. Delta of Chelan river, at its junction with the Columbia (No. 223). 



1234. Lake Chelan ; looking down lake, showing Round mountain and hanging 



valley of Railroad creek (No. 216). 



1235. Lake Chelan ; looking south across the eastern end of the lake to Lakeside 



and Chelan butte. A glacial terrace and post-glacial ravine are conspic- 

 uous in the front of the butte (No. 218). 



1236. Lake Chelan ; exhibiting the canyonlike gorge which the lake occupies 



(No. 182). 



1237. Lake Chelan ; view northward across eastern end of lake, showing terraces 



produced during glacial occupation of the lake basin in lakelets between 

 the ice and the land (No. 183). 



