COAL MEASURES. 31 



Boring at Marissa, commencing at the bottom of the Belleville 

 coal : 



Ft. In. 



No. 1. Fire-clay 7 11 



No. 2. Limestone or septaria 2 10 



No. 3. Fire-clay 1 



No. 4. Septaria? 11 



No. 5. Clay shale, with concretions of iron ore 50 10 



No. C. Blackshale 5 6 



No. 7. Clayshale 33 



No. 8. Blue slate, with nodules 18 3 



No. 9. Limestone 1 3 



No. 10. Blackslate 6 



No. 11. Coal 1 3 



No. 12. Fire-clay and coal 2 7 



No. 13. Fire-clay 5 4 



No. 14. Coal 10 



No. 15. Fireclay 11 6 



No. 16. Variegated shale 1 6 



No. 17. Light sandy shale 8 9 



No. 18. Dark limestone 3 



No. 19. Light micaceous sandstone 15 6 



No. 20. White fine grained sandy shales ..50 1 



Total depth 225 1 



Salt water commenced flowing in No. 17, and increased so as to 

 stop further progress in No. '20. The lower coals are probably 

 represented by Nos. 11 and 14, neither of which are of any practical 

 value. The sandstone and sandy shale constituting the last 65 feet 

 probably represent the sandstone usually found at the base of the 

 Coal Measures. 



The following is a record of a boring for coal made at Lementon, 

 in St. Glair county, on the line of the B. & S. I. R. R., for which 

 I am indebted to Mr. E. C. Leonard : 



Ft. In. 



No. 1. Soil, clay and gravel 38 



No. 2. Carbonaceous clod coal No. 6? 1 



No. 3 Clayshale 11 



No. 4. Bed and yellow sand? 1 



No. 5. Clayshale 12 



No. 6. Hardrock 1 



No. 7. Clayshale 7 



No. 8. Blackslate 9 6 



No. 9. CoalNo.5 1 6 



No, 10. Fire-clay and shale . ! 34 



No. 11. Hardrock ] 6 



No. 12. Blackslate 3 6 



No. 13. CoalNo.3 2 



No. 14. Fire-clay and clay shale 9 



No. 15. Brown shale 4 



No. 16. Hard blue shale 9 



No. 17. Blue slate .. .1 



