142 Silicious Deposit. 



•^ I 



vinced that near Battle creek, about two or three miles from Ten- 

 nessee river, the coal and its associating strata rest upon the upper 

 transition, or mountain limestone. Bat that is not the case, (at 

 least, as I have been able to ascertain,) near the cr£^b orchard and 

 near the Ohio river. There, an oolitic limestone, underlies the coal 

 formation. Such arrangement is uncommon ; it exists, as far as I 

 know, no where. It is my intention to investigate this matter, da- 

 ring our spring vacation. 



" 2. The primitive formation is a good distance from the coal. 

 The smoky mountains belong, principally, to the clay slate forma- 

 tion. 1 did not discover the least vestige of organized bodies in it. ' 

 Some of this slate, is the roofing slate, while other has a talcose ap- 

 pearance. You know that some rank this formation amongst the 



transition 



while others consider it as primitive. The formation east 

 of that range, is undoubtedly primitive, and belongs to North Caro- 

 lina. To tlie west, it forms an alternation of strata of graywacke, 

 limestone and sandstone on the lower transition. 



" 3. No limestone strata, are found amongst the coal strata. 



" 4. I do not know of any salt water, at least in quantity, in our 

 coal formation. Wells have been bored, and salt water sometimes 

 obtained, but soon failed. 



"5. Only one stratum of coal, has been found In the Cumber- 

 land mountain, and that lies above the Tennessee and Cumberland 

 rivers. 



*' 6. I have found only culmae and some remains of large mono- 

 cotylodonous plants in the sandstone, but no impressions in shale. 



" 7. I have not made any analysis of our coal— it is of a good 

 quality and resembles Richmond coal. 



^ " 8. Iron is the only metallic substance found near our coal, par- 

 ticularly on the eastern declivity of the Cumberland mountains, 

 where is found a large stratum of red oxide of iron. The coal, as . 

 generally is the case, contains a small quantity of pyrites." 



" I have not met with any animal remains." 



Great Silicious Deposit. — Burrh Millstone. 



This interesting and valuable deposit, makes Its most northeaster- 

 ly appearance, so far as I can ascertain, in Coshocton county, Ohio, 

 on the Tuscarawas river, and pursuing a southwesterly course, gen- 

 erally, near the westerly limits of the coal measures, crosses the 

 counties of Licking, Muskingum, Perry, Hockine and Jackson, 



