258 



GEOLOCIY OF THE COMSTOCK LODE. 



Taule VUI.— 8UTR0 TUNNEL. 

 [The temperatures are usually the average of four obeervatioDS on different daya of the month. Observations taken by 

 the surveyor. Kock temperarurca with Gall thermometer in regular drill-hole; water temperatures with common Kendall 

 thermometer.] 



Table IX.— COMPAKISON OF RESULTS. 



.t = a^bd; ^ ^ 



1 degrees Fahrenheit. 



d in feet from top of shaft. 



T in degrees cezitigrade. 



h in meters from top of shaft. 



' Iteinrich's equatic 



I given by himself in Kheuish feet and degrees Reaumur is 



t = 11.8277 -f 0,0077808 rf. 



