550 



BAROMETRIC ALTITUDES. 



Bed of Slate Creek at bridge on road from La Porte to Port wine 



F 



Lowest bed-rock near bank at Portwine .......... 



Summit on trail from Portwine to Morristown . . . . . . . . 



High bed-rock visible on Morristown trail, on Canon Creek side of ridge 



Bed-rock at Gardner's Point, opposite Yankee Hill 



Bed-rock at outlet of St. Louis mines, near Cedar Grove Ravine ..... 



Pine Grove, G. W. Cox's office 



Bed-rock at Pine Grove mines, above Mr. Cox's house ...... 



Howland Flat, Becker's Hotel, second story 



Mouth of Bonanza Tunnel, Potosi . . . . 



Bridge over Slate Creek on road from Potosi to Gibsonville, estimated twenty-five feet 



above bed of creek ............ 



4318 

 4853 

 5345 

 5165 

 4845 



4993 

 5486 

 539G 

 5610 



5Go5 



5505 



Summit of trail from Potosi to Poker Flat 



6370 



Mouth of tunnel in Cold Canon 



5626 



(c.) On Morristovm and Eureka Ridges. 



Bridge over Canon Creek on trail from Portwine to Craig's Flat, estimated ten feet above 



bed of creek . . . . . . . . . . . . 



4262 



Bed-rock at Craig's Flat 

 Bed-rock at Morristown 



5100 

 5160 



Bed-rock at Dead wood . 





5707 



Mouth of Bunker Hill tunnel, head of Grizzly Canon . 



Bed of Canon Creek at Poker Flat 



'• 



Top of bank at Grizzly Hill, near Brandy City ........ 



Bed-rock in Brandy City mines, on Camptonville trail ....... 



■ 



Brandy City Hotel, first floor ........... 



Bed-rock at Arnott's mine, near Windy ville ..... ... 



Bridge over Little Cafion Creek on trail from Craig's Flat to Eureka, estimated fifteen feet 



I 



above bed of creek ............ 



5900 

 4854 

 3560 

 3435 

 3650 

 3540 



4360 



Eureka, Wolfe's Hotel, first floor . 

 Bed-rock at Mugginsville . 

 Mouth of Hardy's tunnel 



# > 



5138 

 5090 

 5038 



(d.) Near Downieville, 



Downieville, St. Charles Hotel, first floor . . . . 



Monte Cristo, Mr. Thatcher's house . 



Mouth of Empire tunnel, Monte Cristo . 



Summit of sag above Monte Cristo, on trail to Excelsior . 



2806 



. 5056 

 5010 



549 



2 





