84 



Prof. J. Prestwich. 



Locality. 



1SS'. Birmingham Waterworks. 



189. Kidderminster 



190. St. Helen's Waterworks . 



191. Tranmere, Cheshire 



192. Wallasey, „ 



193. Worksop 



194. Scarborough 



195. Eastbourne 



196. Deal Waterworks 



19?. Dover Castle 



198. Dover Waterworks 



199. Grrimsby Docks 



200. Deptf ord Waterworks . . . 



201. Sittingbourne 



202. Braintree 



203. Wimbledon 



204. CarisbrookeCastle,I.ofW 



295. Colchester 



206. Trowbridge Waterworks 

 20?. Ostendf 



55 



208. Bourbourg, J near Dunkirk 



209. Dunkirk 



210. Newport, Isle of Wight. . 



211. Grosport 



212. Bothwell,§ Ontario 



213. Croix, Dept. du Nord. . . . 



214. Mons, Grameries Colliery. 



II 



Place of observation. 



Ordinary well 

 yi , jj 



55 55 



n t> 

 jj - jj 

 jj jj 



JJ 55 



Artesian well 

 Ordinary well 

 jj jj 



J5 55 



JJ JJ 



J5 55 



55 55 



Artesian well 



55 J5 



Ordinary well 

 Artesian well 

 Ordinary well 

 Artesian well 



55 55 

 55 5 5 



55 55 



55 5) 



55 55 



5 5 55 



55 55 



Coal 'pit 



60 

 20 



344 



III 



Height of 

 surface 

 above 

 sea-level. 



TV 



J- V 



Mean 

 annual 

 tempera- 

 ture of 

 surface. 



Feet. 



Fahr. 



350 



m 48-7° 



320 



49 ? 



100? 



49 





49 -4* 





55 



127 



m48-7 



176 



m47-8 



25 



m50-9 



20 



50 



380 



m 50 -3 



40? 



„ 



10 



48 



31 



s 50-3 



50 



49-5? 



220 



49-5? 



170 



49-6 





50 ? 



109 



m 49 4 



140 



49-5? 



10 ? 



m 50 



* 49 *4 is the temperature of Chester. 



f The water issued at the surface with a temperature of 18° C, and rose 8 metres 

 above sea-level at the first depth, and 11 metres at tbe last depth. 



X The well was carried at a depth of 250 metres into the chalk. 



§ The water rose above surface at rate of 700 gallons per hour, from the Cor- 

 niferous limestone. 



