V 



On Underground Temperatures. 



Table IV. 



107 



U / WELLS AND BORINGS. 



:e <(the height of overflow is given where known) ; — indicates that the water does 

 » (a little below the water-level. 



it 1 the surface and that of the depth, for which see Table I : those in brackets are 

 ifiof increase is given in italics in Column VII. 





V 



YI 



VII 



yiii 



Number in 

 the general 

 list, Table I. 



Eise of 

 water rela- 

 tively to the 

 surface. 



~T)i "PFpt»pti r*p 



Jl-J JLJUL \Dx \Di-L\j\j 



between the 

 temperature 

 at surface 

 and. at depth. 



Eate of 

 increase of 

 depth for 



1° Fahr. 



Notes and remarks. 







Fahr. 



Feet. 





35 

 129 



-210 



10 -8° 

 12 -8 



19-7 



34 

 35 



52-3 



* For the particulars of the strata of 

 this and the other wells in the London 

 Basin, see Whitaker's " Mem. G-eol. 

 Survey," vol. iv, Part I, pp. 423-571. 







(10 -6) 

 (9-0) 



52 

 60 





230 





20-4 



57 





231 



+ 



25-9 



51-5 





142 



-60 



8 



49 





165 

 210 

 143 



+ 6 



18 -7 

 11-0 



30 



(20) 



65 

 43 

 66 



50 



f The lower part of both these bore- 

 holes was blocked by debris, the wells 

 having been abandoned for several 

 years before the temperature observa- 

 tions were made. 





- 



(10) 



100 





153 





8 5 



153 





45 



+ 



5 



54 





45a 



+ 





48 





123 





6-69 

 (5-3) 



52 



54 





124 





12-52 

 (10-0) 



42 

 40 





209 



+ 



1-8 



235 





