244 



PROCEEDINGS COTTESWOLD CLUB 



1914 



Mr HoUoway's section — extends from 158 feet down to 246 

 feet, and the Inferior Oolite from 246 feet down to 380 feet. 

 The bore-hole then penetrated 3 feet of " strong clay ; 

 sample not seen." 



The " strong clay " is probably the top-portion of the 

 Upper Lias. The Upper-Lias Sands, or " Cotteswold 

 Sands " as they are called in the Cotteswold country, ordin- 

 arily immediately underlie the Cephalopoda-Bed, which, 

 in Mr HoUoway's section, is obviously included in the 

 Inferior Oolite. The Kemble bore-hole showed that a large 

 amount of argillaceous material was there associated with 

 the sand ; but the composition of the deposit, even then, 

 would not have justified the use of the term " strong clay " 

 wherewith to describe it. However, under Chavenage, there 

 may be a thin clay-bed at the top of the Upper Lias, as is 

 the case at Crickley Hill, near Cheltenham'. 



Mr Lowsley-Wilhams informs me {in litt.) that "the sup- 

 ply of water is ample, and even with a steam pump has proved 

 sufficient, the tank holding about 12,000 gallons." 



In the following table the thickness of the beds as ascer- 

 tained by the bore-holes at Kemble Station, Tetbury Water 

 Works (BUnd Lane), and Chavenage, are tabulated : — 



Kemble 



Tetbury 



Chavenage 



Forest Marble 

 Great Oolite 

 " Passage-Beds 

 Fullers' Earth 

 Inferior Oolite 

 Upper Eias 



Rem. 60 1 

 48 



73 

 117* 

 Pen. 54 i 



Rem.' 25 ft. 

 109 ,, 



42 .. 



76 .. 

 Pen.3 48 „ 



Rem. 39 ft 

 63 

 56 

 88 



134* 

 Pen. 5 



1 Described, Proc. Cotteswold Nat. F.C., vol. xviii., pt. 2 {1913), pp. 185-189. 



2 " Rem." = Remaining. 3 " Pen." = Penetrated. 



4 This thickness includes the Cephalopoda-Bed, which, at Kemble, is 6 feet thick. 



On page 245 is given an analysis of a sample of water from 

 the Chavenage bore-hole, together with analyses of samples 

 from Tetbury, Kemble, Westonbirt and Sherston, for pur- 

 poses of comparison.* 



1 Proc. Cotteswold Nat. F.C, vol. xv., pt. 3 (1906), p. 184. Compare also Doulting railway- 

 cutting section. Quart. Journ. Geol. Soc, vol. Ixiii. (1907), p. 390. 



2 I am indebted to Dr J. Middleton Martin, County (Glos.) .Medical Officer of Health, for very 

 kindly supplying me with these analyses. 



