On Underground Temperatures. Table III. 103 



Number 



in 

 general 



list, 

 Table I. 



V YI 



Position of 

 thermometer. 



vii yiii 



Temperature at 

 depth 



IX 



Rate 

 of 

 increase 



of 

 depth 

 for 

 each 



f\ P 0*T*P P 



F. 



VV cbbCr y VV / . 



Spring (S). 

 Rock (R). 



T)pnth of 

 hole in 

 rock. 



Of the 

 rock or 

 water. 



Of air 



in 

 gallery. 







Feet. 



Fahr. 



Fahr. 



Feet. 



18 



W 





65° 





43 





55 





71 





44 





" 





79 





47*5 



54 







54-8 





37 









66-8 





40 





•• 





67-4 



•• 



44 









78 '6 





36 





* * 





85 5 





40 



4*5 



•• 









35-4 













43 "8 













64-2 



J30 



w 





57 3 





35 



158 



R 



2 



54 



•• 



132 





55 



33 



60-8 





88 





35 





58 *8 





64 









(6-8) 



•• 



56 



160 



R 



2 



62 





51 



112 



W 





55 "5 





ol 





s 





57-2 





59 





53 





58 







115 



w 





55 *5 



" 



92 



116 







57 '4 



57° 



90 









61-5 





80 



1 







53-6 



•• 



50 









73 





50 









(19 -5) 





56 



12 



w 





54 





75 





33 





66 





49 









(12) 





46 



11 



s 





58 3 





66 



2 







63-5 





30 



Notes and remarks. 



* The mines in this dis- 

 trict are many of them 

 very old. 



f Station 120 yards 

 distant from shaft. 

 X „ 190 „ 

 § „ 840 „ 



II „ 400 



^[ The slates are asso- 

 ciated with quartzites 

 and greenstone. 



