PAL.BONTOLOGICAL REPORT OP GEOLOGICAL SURVEY. 561 



property, about three quarters of a mile farther from Tradewater, by 

 Mr. Cook, whose name it bears. 



In Union county it is mined by the Messrs. Casey's; out-crops near 

 the old distillery back of Casey ville, also on the property of the Ken- 

 tucky Coal Company, and various other localities in the same county. 



On the eastern boundary of the basin it proves to be the main Hawes- 

 ville and Breckinridge coal vein, at each of which localities we found 

 the identical Lingula umbonata In the shales of the roof at Hawes- 

 ville, where we had an excellent opportunity to examine, they were 

 found in the greatest abundance. 



The remaining figures on plate X belong to the Cephalopoda division 

 of the mollusca, and were collected on a previous occasion by the sur- 

 vey, at Nolin Iron Works, Edmonson county. They are new, and oc- 

 cupy a low position in the Coal Measures, i. e., about one hundred feet 

 above the conglomerate. 



Very little has yet been done towards making openings into the oth- 

 er coals below No. 9, and what old workings have been undertaken are 

 now mostly filled up, so that but little opportunity has been afforded 

 for making collections from these beds. The only animal remains as 

 yet found in them is from No. 7, or "Black-land vein," a thin seam of 

 coal over-layed by a black bituminous, ferruginous carbonate of lime 

 in thin bands, and these are fins, scales, and teeth of fish, that have not 

 yet been determined. This vein, which is only noticed on account of 

 its ferruginous calcareous black-band roof, from one and a half to two 

 and a half feet in thickness, is best developed on the property of Mr. 

 Alfred Towns, in Hopkins county, and usually contains from twenty to 

 twenty-five per cent, of metallic iron. Its is also seen on the proper- 

 ty of the Saline Mining Company, Gallatin county, Illinois, where it 

 contains the same description of fish remains. Its position is about 

 one hundred and thirty feet below No. 9. 



COAL NO. 9. 



This is the main working coal in the western part of the state, and 

 is usually characterised by an abundance of fossil mollusca ; amongst 

 the most numerous are those figured on plate IX : Avicula recta-late- 

 raria, A. acosta, Solemamya soleniformis, Nautilus decoratus, and Pro- 

 ductus muricatus. Besides these there are Nucula Hamerii, Nucula, 

 species undetermined, Pecien, species undetermined, Pleurotomaria 

 71 



