FIGURE i. 



Surface 170 ft. above P.P. 



Superficial Beds; 14 ft. 



a. Water leuel in the J 



Bagshot Beds > cut off 

 85 'below surface. ) 



0. Upper water supply 

 in the Chalh; 7,500 

 gallons per hour. 



C. Lower water supply 

 in the Chalh; 2,500 

 gallons per hour. 



U. Final water leu el 

 in the boring; 

 93' 6" below surface; 

 7 6' 6" above O.D. 



Bag-shot Beds; 

 151 feet. 



Lower Tertiaries; 



(i.e. London Clay 

 and Reading Beds.) 



115 feet. 



Topmost Chalk "sticky" 



and with few flints; 

 water about 70 ft. down. 



Chalk gets harder 

 hereabouts. 



Bottom of Borehole; 

 726 feet. 



(i.e. 556 ft. below O.D.) 



o 10 20 30 40 50 



700'- 



Scale of Feet 

 100 200 



300 



