38S 



THE GEOLOGIST. 



the north we have, at Castle Eden Colliery, the coal-measures overlaid by 

 the Permian ; and at Oughton Colliery, nearer to the Tees, the Trias has 

 been bored into some 500 feet ; the Hutton coal-seam, at Castle Eden 

 Colliery, being some 750 feet below the sea-level, and the salt at Mid- 

 dlesbro' about 1250 feet ; on the south side of the Tees the Lower Lias 

 puts on and is capped by the Upper Lias and Oolitic strata — these strata 

 dipping both to the south and north from the Tees. The following is an 



account of the strata sunk and bored through : — ■ 



No. Fm. ft. in. 



1. Made ground (slag, chalk, etc.) 15 0 



2. - Dry slime or river mud 120 



3. Sand with water 1 4 0 



4. Hard clay (dry) 140 



5. Red sand with a little water 010 



6. Loomy sand with a little water 0 3 0 



7. Hard clay (dry) .... ...230 



8. Rock, mixed with clay and water 15 0 



9. Rock, mixed with clay (dry) 010 



10. Rock, mixed with gypsum (dry) 100 



11. Gypsum with water 020 



12. Red sandstone with small veins of gypsum and w r ater .910 



13. Gypsum rock (dry) ..100 



14. Brown shale with water 010 



15. Red sandstone . 040 



18. Do. with small veins of gypsum and water ... 2 0 0 



17. Blue poststone with water at bottom 0 3 0 



18. Red sandstone with water 310 



Bottom of sinking 29 4 0 



19. Redstone 72 5 4 



20. Red and white sandstone 016 



21. Red sandstone 3557 



22. Do. and clay 0 10 



23. Red sandstone 843 



- 24. Do. and clay 130 



25. Do 11 0 5 



26. Strong clay 029 



27. Red sandstone and clay 016 



28. Do 4 3 5 



29. Do. and clay 130 



30. Do. with a vein of blue rock 1^ thick at 1005 feet .814 



31. Red and blue sandstone 015 



32. Red sandstone . ..100 



33. Do. and thin veins of gypsum 0 15 



34. Do. do 6 3 8 



35. Red sandstone, blue clay, and gypsum 0 12 



36. Do. with veins of gypsum 14 3 3 



37. Gypsum 032 



38. Wliite stone 008 



39. Limestone 028 



40. Blue rock 002 



41. Blue clay 002 



42. Hard blue and red rock 0010 



43. White stone 027 



44. Dark red rock 012 



45. Dark red rock, rather salt 067 



46. Salt rock, rather dark (1) 2 0 7 



47. Do. very dark (2) 0 4 1 



