540 



BAROMETEIC ALTITUDES. 



Squirrel Point, bed-rock . 



Average bed-rock in lowest part of channel at Niece and West's diggings . 



DD "O 





Track level at mouth of tunnel of Washington Mining Company . 

 Bed-rock near road (opposite Savage's) where it disappears under the gravel 



Bed-rock at bottom of Mallory's incline 



Street level, front of Grand Hotel, You Bet 



End of dump at Hubbard's tunnel, Pine Hill ....... 



Bed-rock level, end of Pine Hill, near Hubbard's • . 



* Junction of roads from You Bet to Little York and to Niece and West's old mine 



* Top of northwest bank at "Waloupa" ....... 



2651 

 . 2625 



2648 

 . 2833 



2646 

 , 2985 



2651 

 . 2678 



2613 



Average bed-rock at " Waloupa " 



West end of range near " Copper District " . . 



Bed-rock in mines on Snake Ravine, west of White House .... 



Mule Canon, on rim of channel, near Major Park's 



*Nevada Company's boarding-house 



Rim-rock near high flume, Sardine Flat 



Point near old shaft on Chicken Point 



High bed-rock on Chicken Point 



Top timber of Cozzen's and Garber's old shaft 



Bed-rock at outlet of mines, opposite Cozzen's and Garber's old mill . 



Blue line of sandy deposit in main channel, Wilcox Ravine 



* 



Sluice near old blacksmith shop, at mouth of Brockmann's old mines, Missouri Canon 

 Mouth of Brockmann's bed-rock ravine 



High bed-rock in cut at head of north fork of Missouri Canon, near Timmens's 

 Bed-rock near Hussey's • •......, 



r 



Point on Bunker Hill ditch, where slate was first seen in the bottom of the ditch, going 



from Hussey's 



Top of gravel knolls, near high flume, opposite Bunker Hill . . . . 



Bed-rock at William's diggings on Bunker Hill, near Red Dog 



Average deep bed-rock at Red Dos .... 



Rim-rock at small opening on Independence Hill 



Average bed-rock, Independence Hill, opposite Red Dog mines 



■ 



Level of tailings in Greenhorn Creek, near Gas Canon (Nov., 1879) 



Level of tailings in Greenhorn Creek (Dec, 1870) at outlet of small opening on Inde- 

 pendence Hill 



Level of tailings in Greenhorn Creek, half a mile lower down (Dec, 1870) . 



Level of tailings in Greenhorn Creek (Nov., 1870) at crossing of road from Red Dog 



to Nevada City ............ 



2832 

 2594 

 2672 

 2723 

 2818 

 2931 

 2911 

 3075 





3070 



2742 

 2762 

 2799 

 2838 

 2805 

 3056 

 2917 



2913 



2826 

 2641 

 2625 



2728 

 2626 

 2696 



2496 

 2446 



2428 



