MR. H. B. WOODWARD ON A WELL-SINKING AT SWINDON. 



299 





^'1 



6^ 



Purton 



Spring, 



. Voelcker. 



Purton 



Spring, 



. M. Noad. 



a a 



03 



Marston, 

 Cheshire, 

 Brine. ' 



English 

 Channel, 

 )ea-water. 







<1 



w 



00 







Sodium chloride 



1824-37 



34-29 





748-30 117655-40 



1964-16 



Sodium carbonate ... 





... 



... 





25-20 







Sodium sulphate 





112-23 174-90 



357-63 



102 20 





Potassium sulphate ... 





1-91 



10-26 





trace 







Potassium chloride ... 



16-56 













15-31 



Potassium carbonate . 





28-88 











Calcium chloride 



i9i-ii 













Calcium sulphate 



1-25 



83-87 



62-56 



135-37 



273"20 



98-46 



OaJcium carbonate . . . 







40-60 



7-63 



trace 



2-31 



Calcium phosphate . . . 











trace 





Magnesium chloride . 



88-47 





30-00 



27-30 





256-66 



Magnesium carbonate 



8-71 





2-10 





■74-90 





Magnesium sulphate . 





77-20 



76-59 







160-70 



Magnesium bromide . 





0-92 











2-05 



Sodium bromide 









• trace 



7-70 





Sodium iodide ... 





0-66 



6-88 



trace 



Iodine 

 traces 





Silica 



r 0-39 

 "0-99 



•5<- 



1-28 



}o-28 



... 

 ... 



2-08 



1-26 

 trace 



trace 

 trace 



:::::: 



traces 



Ferric oxide 



Alumina 





Ferrous carbonate . . . 



Manganous carbonate 





... 





! trace 







Organic Matter, &c. . 





8-75 



1-14 



0-10 1 





2131-85 



350-27 



401-11 



1277-59 18138-60 



2499-65 



The occurrence of saline waters in the vicinity of Swindon is, 

 however, not new. In an old topographical work it is mentioned 

 that " almost all the well-waters about the north part of Wiltshire 

 are very brackish ... At Cricklad their water is so very salt that 

 the whole town are obliged to have recourse to a river hard by for 

 their necessary uses." And it is stated that the waters at High- 

 worth, Wootton Bassett, Poulshot, and Lavington near Devizes are 

 saline f. Apart, however, from the interesting and more or less valu- 

 able records pubHshed in the " good old times," when mineral springs 

 were discovered nearly all over the country, there are more modern 

 records of saline waters in the neighbourhood of Swindon. And it 

 will perhaps be desirable to consider these records in topographical 

 order. 



In a well sunk near Eodbourno Lane, north-west of Swindon, in 



* In the water of the Swindon well, ferrous carbonate, bromides, boric 

 acid, and free carbonic acid are noted by Mr. Harris, but their quantities 

 were not estimated. 



t John Aubrey. Nat. Hist, of Wiltshire (1691). Edit, bv J. Britton, 1847, 

 pp. 21, 25. ' t 



