82 



Prof. J. Prestwich. 



Locality. 



168. Buda-Pesth, Hungary 



169. Chicago 



It©. Chili, Chanarcillo .. 



111. Brazil, Minas Griraes 



112. Sark and Herm, Channel 



Islands 



112'. Sheboyan, Wisconsin f . . . 



113. Ireland, various mines . . 



114. Cornwall, mean of ten 



mines. 



115. Ireland, Wicklow 



116. „ Waterford 



111. County Cork 



118. "Venice, "Villa Francisco 



Grande. 



119. Venice, Gasworks 



ISO. Brussels, Belgium 



181. Aerschot, „ J 



182. Minden, Prussia 



183. Arcachon, Gironde 



184. Pondicherry, East India . 



18 S. Dundee 



186. Bradford, Yorkshire 



181. Blackburn 



188. Birmingham private well. 



II 



Place of observation. 



Artesian well 



Artesian well 

 Silver mine . . 

 Iron mine 



Artesian well .... 

 Metalliferous mine 



Artesian well 



Ord 



inary well 



Abandoned coal shaft 

 Ordinary well 



Ill 



Height of 

 surface 

 above 

 sea-level. 



IV 



Mean 

 annual 

 tempera- 

 ture of 

 surface. 



Feet. 



Fahr. 



• / r« . 



a 50 3° 



» 

 >> 



>5 



•• 



600 



» 

 J) 



m 45-9 





64 





64 '49 





s 51 '6 



620 







50 ? 



100 300 



J.UU ~^0\J\J 







s 49-5 





50 ? 





m 51 ? 





m 55 '6 



193 



>> 



m 50 '3 



m m 



238 



f) 



m 48§ 



, . 



55-4 





a 82'5 



160 ? 



m 46 '6 



366 



s 47 -8 



347 



48\\ 



340? 



m 48-7 



* An infiltration of water from a higher level was suspeoted. 



f Flowing water was obtained at 1340 feet in the upper portion of a Silurian 

 sandstone. Water rose 104 feet above the surface. Discharge of water = 225 gallons 

 per minute. 



