COAL MEASUEES. 11 



Ft. In. 



No. 32. Shale 2 6 



No. 33. Limestone 4 2 



No. 34. Shale 2 6 



No. 35. Limestone 10 



No. 36. Dark blue shale 7 G 



No. 37. Limestone 8 



No. 38. Black slate 2 8 



No. 39. Coal 7 C 



Total depth to bottom of coal 421 6 



No. 3 of this shaft is undoubtedly the Shoal cieek limestone, and 

 the coal is here about 370 feet below it, which corresponds very 

 nearly with its position in the Sandoval shaft, if the coal at these 

 two points is identical, as is probably the case. 



A shaft has been sunk at Okawville by Shulze & Brother, and 

 an irregular seam of very good coal was reached at a depth of about 

 276 feet. This shaft commences below the horizon of the Shoal 

 creek limestone, but as no detailed record of the beds passed through 

 was made, no satisfactory conclusion could be formed as to the po- 

 sition of this seam in relation to that found at Nashville and San- 

 doval. It undoubtedly holds a higher position, and that seam may 

 probably be found here by carrying the shaft down to the proper 

 depth. If an accurate record of the strata passed through had been 

 kept, some estimate of the additional depth required to reach a bet- 

 ter seam might be given, but without it the question can only be 

 settled by actual experiment. 



The following record of a boring near Winchester in Scott county, 

 made by the Manchester Mining Co., under the direction of Mr. G. 

 E. Darling, was furnished by Mr. John C. Andrus. Manchester is 

 located near the western borders of the Illinois coal field, and hence 

 only about 120 feet of Coal Measure strata were found, including the 

 horizon of coals No. 1 and 2, neither of which were thick enough 

 to be of any practical value for deep mining: 



Feet. 



No. 1. Soil, clay and gravel 59 



No. 2. Fire-clay? 7 



No. 3. Slaty coal, (local) 1 



No. 4. Clay shale 10 



No. 5. Sandstone 1 



No. 6. Coal 2 



No. 7. Hard sandstone 7 



No. 8. Clay shale 10 



No. 9, Limestone 2 



No. 10. Soapstone 10 



No. 11. Sandstone 1 



No. 12. Clay shale 12 



