BOIS T D COUNTY. 133 



Ft. In. 



!Xo. 40. Cone in cone, good specimens 2 



No. 41. Four inches ironstone at top and bottom, separated by four inches of dark shales, con- 

 tains Hemipronites crassus, and Product us Prattenianus 1 



No. 42. Argillaceous shale, with flattened ironstone concretions 20 



No. 43. Ash-gray si'icious limestone, upper surface sandy and shelly, made up almost entirely 

 of fossils, including Aviculopecten occidentalism Hemvpronites crassus, Productus 

 Nebrascensis, Athyris subtilita, together -with Myjxlina Swallovii, Euomphahis sub- 

 rugosiw, Myalind sub-quadrata, Pinna per-acuta, Chonetes granulifera? and Meekella 



striato-costata , 2 



No. 44. Brown sandstone, fracture, sometimes shows a greenish, drab, contains Pinna per-acuta 

 and Bryozoa. This is sometimes merged into that above, and they then both pre- 

 sent the characteristics of a ferruginous sandstone 2i 



No. 45. Drab-clay shale, with flattened concretions of ironstone 30 



No. 46. Dark-drab indurated sandstone, with some remains of a few fossils, could scarcely dis- 

 tinguish species, Aviculopecten occidentatis 8 



Two miles above Bethel bridge, on Shoal creek, there are thin layers 

 of Xo. 46 containing Myalina Swallovii, Aviculopecten occidentalism with 

 fragments of plants (Catamites). Just below, on the creek, No. 47 

 appears thus: 



Ft. 



1. Shaly ferruginous sandstone, with ironstone concretions 6 



2. Blue sandy shale •. 2 



3. Sandstone, upper part sometimes gray, indurated below, and bright brown, lower part dark-gray, 



with carbonaceous bands 4 



4. Gray micaceous sandy shale and shaly sandstone 3 



Half a mile east of Bethel bridge the following beds are exposed : 



Ft. 



No. 4*2. Drab argillaceous shale, with concretions of ironstone 18 



.,' > Sandy limestone and sandstone 3 



No. 45. Argillaceous shale 17 



East of Fairview, near the east county line, on a branch of Hurricane 

 creek, there is expo sed# about six feet of chocolate colored sandstone 

 (part referred to Xo. 40), containing Productus Prattenianus, Aviculo- 

 pecten occidentalism and remains of plants (Catamites). The position of 

 this rock would indicate that the easterly dip of the rocks in this county 

 does not exceed thirty feet across its whole breadth. Below No. 46 are 

 seen on Shoal creek occasional outcrops of thin bedded gray sandstone 

 amounting to about thirty feet in total thickness : 



Shoal Creek Limestone. Ft. In. 



No. 49 At many places on Locust Fork there crops out about four feet of an ash-blue lime- 

 stone, with a somewhat splintery fracture jointed vertically, the upper part shelly 

 on exposure; contains Productus longispimis, Spiriferlineatus, Sj>. camera-ties, Pro- 

 ductus (B< hijnchonella Osagensis, Itetzia punctuli/era, Athyris subtilita, 

 Chonetes variolata? and JSemipronites crassus 4 



Below this are seen on Locust Fork: 



No. 60. Greenish -drab clay shale 2£ 



No. 0O4. Blue shale, somewhat bituminous : 2 



No. 51. Bituminous shale 2 



No. 52. Blue clay shale, with occasional flattened concretions of pyritiferous ironstone and 



septaria 10 



No. 53. Coal No. 9, good except lower 2 in 10 



No. 51. Light-blue fire-clay, from a few inches thick to two feet. Next below is three feet of 

 yellow and brown sandstone in one inch layers, then argillaceous shale. Passing 

 eastwardly down the creek, the rocks dip about twenty feet per mile. One mile 

 south-west, at the county line, there is a local dip north of four feet in a hundred. 



