78 



Prof. J. Prestwich. 



Locality. 



142. Chiswick, Middlesex. 



143. Swinderby, Lincoln 



144. Sperenberg, Berlii 



144a. St. Petersburgh . . . 

 145. Anzin, Nord, France 



146. 

 141. 

 148. 



149. Schemnitz, Hungary 



150. Boldon, Newcastle 



151. Manegaon, India . . 



152. Pontypridd, Soutb Wales 



II 



Place of observation. 



Artesian well 



Bore-1 



Artesian well 



No. 1 Colliery shaft , 



No. 21 



No. 3 



No. 4 



Elizabeth silver mine. ~\ 

 Maximilian . j 



Amelia „ . |> 



Stefan „ . I 



Siglisberg „ . J 



Coal pit 



Bore-hole 



Coal pit\\ 



III 



Height of 

 surface 

 above 

 sea-level. 



Feet. 



25 



120? 



from 

 1633 



to 

 2504 



97 

 1400 



554 



* Tbis is the mean temperature of Berlin. 



f The deptbs here given are in Rhenish feet, 4052 Rhenish = 4172 English feet. 

 X In this shaft there was a seam of decomposing coal at a deplh of 90 metres. 

 § Temperature of South Shields. 



