MACOUPIX COUXTY. 297 



at low water, but no exposure was found where its thickness conld be 

 accurately determined or its quality ascertained. It was reported to be 

 about two feet thick. Between coal No. 5 and this lower seam there is 

 a bed of nodular argillaceous limestone, which sometimes lies directly 

 under the coal, and at other points is separated from it by a few inches 

 of clay shale or fire-clay, and below the limestone there is from fifteen 

 to twenty feet of sandy shales^ extending down to the bituminous shale 

 which forms the roof of Xo. 4. 



The shales and argillaceous limestone immediatey below coal Xo. 5 

 contains CJuvtctes milleporaccous in abundance, and at this locality a 

 peculiar group of small univalve shells have been obtained, a number of 

 which have been described in these reports, and will be found illustrated 

 on PL 31, Vol. II. These univalves are associated here with Atliyris sub- 

 til ita, Spirifer cameratus, and some other of the more common forms of 

 the Coal Measures. The upper limestone above the coal at this locality 

 contains Fusulina, and joints of Crinoidea, which are associated with 

 Product us Prattenianus and P. longixpinm, but fossils are less numerous, 

 both as to species and individuals, in the limestone ovei the coal here, 

 than in that beneath it. In Fulton county the Chcetete* milleporaceow, 

 is found in the clay shales or fire-clays under coal Xos. 6 and 7, and it 

 is possible that the Hodge's creek bed should be referred to Xo. 6 of the 

 Fulton county section, but we are more inclined to regard it as the 

 equivalent of Xo. 5 of that section, although that is a rather local seam 

 in its development in that county, and Hodge's creek coal a very per- 

 sistent one here. The thickness of the limestone over this coal is very 

 variable, and ranges from three to ten feet, and where it attains its 

 greatest development, it is usually interstratitied with calcareous shale. 



On Apple creek, in the north-west corner of the county, the following 

 beds are exposed between Carlin's caunel coal seam, on the north-east 

 quarter of section 3, township 12 north, range 9 west, and the west line 

 of the county, following along the bluffs of the main creek and its tribu- 

 taries : 



Xo. 1. Bituminous shale 1 foot. 6 in. 



Xo. 2. Channel coal, (local ?) 1 



Xo. 3. Shale 10 to 12 



Xo. 4. Compact steel-gray limestone 2 



Xo. 5. Sandstone and shale 32 



Xo. 6. Bituminous shale 1 



Xo. 7. Coal, (Xo.7?) 



Xo. 8. Clay shale 6 



Xo. 9. Xodular gray limestone 4 



Xo. 10. Greenish colored shale 12 



Xo. 11. Brown, coarse-grained limestone 1 to 8 



X. i-. Sandstone and sandy shale 24 



Xo 13. Brown argillaceous limestone *3 



Xo. 14. Shale, mostly argillaceous 1 to 3 



X-i. 15. Coal. (Xo. 6 ?) 2 to 3 



No. 16. Clay shale and nodular limestone 8 to 10 



39 



6 in. 



6 in. 

 10 in. 



