COAL MEASURES. 27 



I am not able to correlate this boring, either with the shaft at 

 Mattoon or the diamond drill boring at Pana. I am satisfied that 

 it is not deep enough to reach the horizon of coal No. 5, but it is 

 possible that the lowest coal reported in the boring may be No. 7, 

 and if this conclusion is correct, No. 5 would be found at from 60 

 to 75 feet below. The limestones reported in this boring have no 

 analogues any where else in the Coal Measures, either in the num- 

 ber of the beds or their aggregate thickness. Nos. 6, 8 and 11 

 constitute a calcareous mass 31 feet in thickness, with only about 

 8 feet of intervening shales, and in my examinations of the outcrops 

 on the Embarras river, in this and the adjoining county of Cum- 

 berland, no such heavy beds of limestone were found. 



The "Fusulina" limestone which outcrops in the vicinity of Green- 

 up, and along the Embarras river at intervals nearly to the south 

 line of Coles county, is nowhere more than five feet in thickness, 

 and I found no calcareous shales of any considerable thickness 

 associated with it that could be mistaken in the boring for lime- 

 stone. This may be represented, however, by No. 6 of the boring, 

 and the 20 foot limestone No. 8 may be the equivalent of the 

 Quarry Creek limestone of Clark county, jwhich is underlaid by a 

 green shale there, and possibly agreeing with that reported under 

 the limestone in this boring. Below this there are four other beds 

 of limestone reported, varying in thickness from six to twenty feet, 

 making an aggregate of some 80 or 90 feet. If this is a true record 

 of the Coal Measure strata underlying Coles county, it shows a 

 greater thickness of calcareous beds here than have been found else- 

 where in the State. 



BOEING AT HiBVEL. 



Feet. 



No. 1. Surface soil and clay 17 



No. 2. Sandy shale 3 



No. 3. Clayshale 56 



No. 4. Limestone 10 



No. 5. Clay shale 12 



No. 6. Limestone 5 



No. 7. Green shale 30 



No. 8. Black shale 4 



No. 9. Sandy shale ---- 20 



No. 10. Clayshale 160 



No. 11. Limestone 3 



No. 12. Clayshale 30 



No. 13. Black shale 3 



No. 14. Clay shale 40 



No. 15. Limestone 2 



No. 16. Clay shale 1 



No. 17. Black shale... 3 



