156 WORGRET HILL AND WAREHAM WATER StJPPLY. 



some light on the development of the Bagshot Beds in East 

 Dorset. 



In order to understand what follows it will be necessary to 

 give a detailed description of the beds which were passed 

 through in the combined sinking and boring operations under- 

 taken for the Water Supply. 



WORGRET WELL AND BOREHOLE. 



Details of beds from 101 feet above Ordnance Datum to 114 

 feet below Ordnance Datum. In this enumeration the Bagshot 

 Beds are divided into four groups, A-D, based on lithological 

 characters, as shown in the accompanying table. 



See also Tabular Column (Fig. 4). 



Details of Worgret Well and Borehole. 



A. Higher Bagshot Sand Series. 



B. Higher Bagshot Clay Series. 



C. Second Bagshot Sand Series. 



D. Pipeclay Series. 



Pleistocene. Thickness. Depth. 



Ft. In. Ft. In. 

 x. Plateau-gravel . . . . ..90 90 



Bagshot Beds. 



A. a. Fine dry sand, gradually getting coarser 28 6 



b. Sandy loam . . . . ..60 



c. Fine dry sandy loam, white in colour . . 50 



d. Fine sand, waterlogged . . ..60 



Total A. . . 40 o 49 o 



