84 



MINING INDUSTRY. 



toil ; and upon the east face of the Gold Hill body, at a point near the great 

 curve of the east wall, it gave $6 50 to the ton. 



Tempekatuee of Lode. — Throughout the interior of the lode a temper- 

 ature considerably higher than that of the open air is maintained. The fol- 

 lowing table is a record of a great number of underground observations, from 

 the Northern Gould and Curry to the South Crown Point: 



Table showing Temperatures in the interior of the Comstock Lode, 



Mine. 



Ophir . 

 Savage 



Gould and Curry 



Temperature. 



Locality. 



Bottom new shaft ... 



Curtis shaft, 2d station, 180 



feet from shaft. 

 Do. 3d station, north mine, 

 13th floor above track. 



Do 



Do 



Do. 4th station . - 



Do 



Do 



Do 

 Do 

 Do 



Do 



Do 



Do. 5th station 



Do 



Do 



Do 



Do. bottom shaft . 

 Bonner shaft, 2d station 



Do 



Do 



Do 



D-Street level, middle tunnel 



o 



o 



60 



72 

 64 



72 

 67 

 80 

 80 

 76 



81 

 80 



74 



85 



79 



69 

 75 

 73 

 79 



67 



65 



80 



83 



59 

 73 

 64 



68 

 80 

 81 



80 



77 



84 

 88 



78 



73 



67 



Remarks, 



Water dripping. Shaft 200 feet 

 deep. 



Barren quartz. 



Clay beside quartz. 



Bottom Potosi strike. 



Switch, north drift. 



W§t clay, ICO feet from switch , South 



Mine. 

 4th floor above track. Quartz. 

 6th floor South Mine. Quartz. 

 South Mine, south drift, 4th station. 



Quartz. 

 First swittth from shaft, 4th station. 

 80 feet west from shaft. 

 End north drift. 

 End south drift. Little water. 

 75 feet from end. drift ; dripping. 

 West drift, 50 feet from shaft. 

 45 feet below 5th station. 

 100 feet west of shaft; damp. 

 East clay-seam ; 2 feet wide. 

 200 feet west of shaft . 

 In east wall, 300 feet west from 



shaft, 

 500 feet from shaft ; i foot wide. 



