48 Mr. William Wbitaker on some 



Chalk, f Chalk, with very many flints 220 



250 ft. t „ with less flints 30 



Caterham. — Waterworks. 

 From a tracing communicated by Mr. E. Easton. 



About 707 feet above Ordnance Datum. 

 Old well in engine-bouse. New well about 20 feet from engine- 

 bouse, and 30 feet from old well. 



Sbaft of old well about 480 feet ; shaft of new well a little 

 less ; the two connected by adits at about 275, 360, and 440 feet 

 (top of each). 



Highest normal water-level from Chalk about 306 feet down : 

 lowest, 410 feet down ; normal water-level from Lower Green- 

 sand, 395 feet down. 



Old shaft has a boring of a few feet, in Upper Greensand ; 

 new sbaft, one about 50 feet, into Gault, and another to Lower 

 Greensand. 



Gravel [Blackheath Beds] 149 



Chalk 307 



Upper Greensand 55 



Gault clay 343 



Rock (with phosphatic nodules) ^ 



Lower Greensand 19|^ 



874 

 Another tvell, 213 (or 220?) feet deep, with a boring, made in 

 1878, gave the following section (J. Barrow, Proc. S. Wales Inst. 

 Eng., vol. xi., no. 7, p. 324, pi. 52) :— 



Gravel and flints [Blackheath Beds] 67 



Chalk and Chalk Marl 400 



Upper Greensand 53 



Gault Clay 331 



Lower Gi'eensaud 11 



862 



Chelsham. — In the valley N.W. of Warren Barn. 1884. 



478f feet above Ordnance Datum. 



Made and communicated by Mr. J. Taylor, of Eeigate. 



Shaft of 6 feet diameter to 170 feet, and then of 10 feet diam. 



Water foiind at 161 feet, and the work stopped by water at 

 163 feet, pending the fixing of temporary pumps. On leaving off 

 in February, at 184|^ feet, water rose 54 feet in some days. In 

 the autumn the water sank, and at last disappeared ; the well 

 was then deepened. In the spring of 1885 the water stood 

 82 feet up. 



