ON THE CIRCULATION OF UNDERGROUND WATERS. 



403 



Sodium chloride 10690 



Sodium sulphate 510*0 



Calcium sulphate 193'1 



Calcium carbonate 10 - 9 



Magnesium chloride 38 - 9 



Silica 1-8 



Ammonia - l 



1824-7 in 100,000 parts. 

 With traces of potash, iron and alumina. 



AVeight of total solids, dried at 170° C, 1831-5. 

 Specific gravity of the water at 9° C, 1-01462. 



Section of Wytham Boring. 



Presented by the Earl of Abingdon to the Oxford Museum in 1849, 

 and published in Phillips' ' Geology of Oxford,' p. 296. 



Ft. in. 



1. Loamy ground 12 



2. Quicksand and water 3 



3. Blueclunch 68 6 



4. Light clunch 1 6 



5. Blueclunch 28 6 



6. Clunch bines 4 6 



7. Blueclunch 29 



8. Clunch bines 2 



9. Blue clunch 28 



10. Brown clunch 3 



11. Mingled ground 11 6 



12. Strong grey rock 1 



13. Grey clunch 2 



14. Brown clunch 1 6 



15. Mingled ground.... 17 



18. Blue clunch bines 6 



17. Mingled ground 4 



18. Blue clunch 17 6 



19. Mingled groimd 9 6 



20. Blue clunch 5 



21. Dark blue rock 3 6 



22. Dark parting clunch 6 



23. Dark blue rock 2 6 



24. Dark clunch 11 6 



25. Strong blue rock (Corn- 



brash) 10 6 



26. Dark parting clunch 1 



27. Strong blue rock 5 6 



28. Strong parting clunch 6 



29. Blue rock 1 6 



Ft. in. 



30. Chinch and clunch 



bines 6 



31. Grey rock 18 



32. Dark parting clunch... 6 



33. Light rock 30 3' 



34. Light parting clunch 



bines 9 



35. Light rock 5 



36. Very dark parting 2 



37. Grey rock 1 4 



38. Dark parting 8 



39. Clunch bines ' 7 6 



40. Grey rock 3 



41. Dark parting 1 6 )■ p 



42. Grey rock 2 6 



43. Blue bines 2 



44. Mingled ground 3 



45. Blue rock 9 



46. Dark ground 1 6 



47. Mingled ground 7 6 



48. Light rock 16 6 



49. Black bat 2 



50. Bock 35 6 



51. Mingled ground (In- 



ferior Oolite) 11 7 



52-5. Mingled ground (In- 

 ferior Oolite) 3 



56. Ironstone (marlstone) 4 



57-58. Clunch in ironstone 



(marlstone) 132 



59. Dark clunch(marlstone) 2 



" The boring was carried to the depth of 633 ft., the strata the same 

 as that at 596 ft."— C. "Webb. 



The boring was made in 1829. 



To exclude sources of contamination, the water is remarkably free 

 from organic impurity, the amount in some cases being as low as -047 

 part in 100,000, and -033 grain per gallon, at Scarborough well, and 



dd2 



