66 



Prof. J. Prestwich. 



Locality. 



56. Neuffen, Wurtemberg* . 



5*7. Mondorff,f Luxembourg 

 >> • • • 



58. Mons(CouchantdeFlenu) 



59. Eastern Virginia, U.S. 



Mills's Pit. || 



60. Eastern Virginia, U.S. 



Wills' s Pit. 

 jj )> 



61. Eastern Virginia, U.S. 



Midlothian Pit. 



JJ JJ 

 J J JJ 



62. Meaux, Marne 



63. Ostend, Belgium 



64. Vienna 



65. Mondorff, Luxembourg . 



66. Charleston, U.S. A 



69. Conselica, Ferrara, Italy ^[ 



68. Creuzot (Torcy) Saone et 



Loire.** 



69. Creuzot (Mouillonge) ... 

 Par 



10. 1837. 



11. 1837 

 92. 1837 



Cornwall 



Consols 

 Botallock 



II 



Place of observation. 



Shaft and bore-hole 



Artesian ivell .... 

 j> >>••■■ 

 jj jj • • • • 



Coal pit 



Coal pits 



jj jj •••••••• 



jj >j 



jj jj 



Artesian well 



» >} ' ' • • * 



jj >}•••• 



j j )>'''' 



5) » • • ' * 



JJ J5 • ■ • • 



JJ JJ • • • • 



JJ JJ • • • • 



Bore-hole 



jj jj ••»••••• 



Tin mine 



Copper mine 



Ill 



Height of 

 surface 

 above 

 sea-level. 



Feet. 

 1378 



672 



20 



637 

 584 



20 



jj 



jj 



27 

 1017 

 1052 



40 



* The abnormal temperature in this boring is attributed by M. Daubree to the 

 proximity of masses of basalt of post-miocene age ; and by which basalt the adjacent 

 rocks hare been altered. The surface temperature of Tubingen is 8'7° C. The 

 temperature from 30 metres downwards marked 38 - 7° C. 



. f The water overflowed from a spring met with at a depth of 450 metres. Bore- 

 hole continued to further depth of 730 metres. Thermometer not protected. 



X Temperature of the water which overflowed at this level. 



§ Temp, not given : only the rate of increase of 1° C. in 33'25 metres. 



|| At Mills's and Wills's pits the temperature given is that of the water collected 

 at bottom of shafts. 



