VERMILION COUNTY. 253 



FEET. 



Coal, No. 7 2 to Si- 

 Fire clay 6 



Micaceous shale, some fine sandy, with few nodules of argillaceous limestone 10 " 15 



Sandy shales and shaly sandstones, some quarried 30 " 40 



Drab clay shales, with large ironstones. ... 15 " 20 



" " " small ironstone nodules and bands 30 " 40 



Fine grained, micaceous, carbonaceous clay shales 10 " 15 



Fine grained, micaceous, carbonaceous clay shales, with flat nodules and thin bands 



of ironstone; bottom darker, with Leaia and fern leaflets 12 " 15 



Coal, No. 6 4 



This outcrop of the lower seam of coal is reached about three miles below 

 Georgetown, near the northeast corner of section 3, township 17 north, range 

 11 west. The roof shales are in places crowded with the separated compressed 

 valves of Leaia tricarinata, accompanied by a few scattered fragmentary fronds 

 of ferns. The Leaia was found abundant, in the same position, upon Yankee 

 branch, in section 14, of the same township. It is also found uncompressed, 

 but in less abundance, in some of the small ironstone nodules of the overlying 

 beds, where it accompanies considerable numbers of ferns, among which are 

 found N^uropteris Mrsuta, .ZV. rarinervis, If. vermicular is, Pecopteris Bueklandi /, P. 

 oreopteridius, P. vittosa, P. Miltoni?, Odontopteris Schlotheimi, together with 

 Stigmaria, ficoides, Sigillaria Brardii, 8. monostigma, Lepidophyllum maju/t, 

 Lepidodendron rugjsum, Lepidostrobus variabilis, Calamites approximatus, Aste- 

 rophyllites and Equisetites ? One nearly perfect insect found here, probably 

 belonging to the genus Miamia, is in the collection of Dr. J. C. Winslow, of 

 Danville. This same bed of nodules, containing the same set of fossils, ex- 

 cepting that the Leaia has not been noticed ; outcrops on the bank of the Wa- 

 bash at Durkee's ferry, about six miles above Terre Haute. In the southern 

 part of this range, the roof of the coal is a black, bituminous shale, often slaty, 

 three or four feet thick, accompanied by huge concretions of pyritous ironstone. 



No. 34 is apparently the equivalent of coal No. 5, of the Illinois Valley sec- 

 tion. Along the Wabash valley, its outcrop is nearly continuous from above 

 Danville to where it dips under the river between Clinton and Durkee's Ferry. 

 Its thickness is variable : about Danville, sometimes less than four feet ; two 

 or three miles farther south, five to six feet ; on Grape creek and its branches, 

 five to seven feet; on the Little Vermilion, near Georgetown, four feet; at the 

 Horse Shoe, above Newport, five to seven feet; near Clinton, five to six feet. 

 It is generally a free burning coal, much freer from sulphur than the upper 

 seam, and better liked for domestic use. Along Grape creek, there is a thin 

 clay parting about four feet from the top of the seam, analagous to that in the 

 upper seam. I cannot say whether this is constant further north ; further 

 south, it is generally present throughout the outcrop. In the northern part 

 of its outcrop, this seam is capped by from six to ten inches of cannel; but this 

 character is not common. 



