THE GEAVEL: DUTCH FLAT AND GOLD EOT. 



145 



' 



possibility that the channel had any exit in this direction. Near Gold Run 

 Station, and north of the railroad, is another quite well marked hill of slate, 

 which may be considered as the continuation of the slope of Cold Spring 

 Mountain towards Bear River. At the southern end of this last-named eleva- 



* 



tion there is also a prominent spur of bed-rock, near Betton Ravine, which 

 rises considerably above the line of the rim-rock, until the steep descent into 

 the canon of the North Fork of the American is reached, which is here 2,270 

 feet below the summit of Cold Spring Mountain. On the east, the rim-rock 

 is seen on the right bank of Canon Creek, for nearly the whole distance from 

 the railroad to the neighborhood of the Cement Mill. On the left bank of 

 the Creek there is a high ridge, the top of which has all the characteristics 

 of a lava flow, and seems to be a portion of the same one to which Cold 

 Spring Mountain belongs. There are one or two small patches of gravel on 

 the left bank of the Creek, near its junction with the North Fork, and about 

 on the same level with the main deposits of the same material on the oppo- 

 site side ; but they are not of much extent or value. 



♦ 



The width of the gravel will average, for the whole distance between the 

 railroad and Indiana Hill, nearly or quite half a mile ; although there are 

 many places where it has not been w r ashed off to that width. There were 

 still, in 1870, a number of claims staked out and held by their owners, on 

 which no work had been done, nor could be until the banks in front had been 

 washed away, or some outlet provided. In the spring of 1868 Mr. E. C. 

 Uren was employed to make the necessary surveys for a deep tunnel, through 

 which all the claims — north of Potato Ravine, at least — could discharge 

 low down into Canon Creek. The total length of the proposed tunnel would 

 be over 9,500 feet, and then its head would still be 125 feet below the pres- 

 ent surface at a point quite near the railroad. In reference to this map 

 Professor Pettee remarks as follows: "Mr. Uren's map affords, by the way, a 

 good illustration of the difficulty of getting any full or correct list of claims 

 or locations of mining ground. Even with his facilities for obtaining infor- 

 mation, and considerable expenditure of time, some few inaccuracies — mostly 



slight, it is true 



could not be prevented from creeping in." 



An attempt was made to collect full details of everything connected with 

 the hydraulic mining interests in this district, Messrs. Pettee and Bowman 

 having been instructed by the writer to make a thorough survey of all the 

 claims, for the purpose of ascertaining with accuracy the amount of gravel 

 washed away, it being hoped that an approximation to the yield of the dis- 





