MONTGOMERY COUNTY. 153 



Part of No. 27 appears t-wo and one-half miles north-west in the bed 

 of the creek, containing Spirifer cameratus, Fistulipora, Productus cos- 

 tatus, P. Xebrascensis, P. Prattenianus, and Myalina subquadrata. The 

 tossils here Lave a well preserved and nacreous appearance. Ou Rocky 

 branch, east of Litchfield, No. 31 appears thus : 



Ft. In. 

 1. Ferragiuous limestone containing Pinna per-acuta, Bryozoa, Prod. Nebrascensis, and 



Synorfadia biserialis 2 - 



2 . Xodular drab shale, soon becoming a firm bed of rock 2 



3- Rough, and irregularly bedded limestone, louver part a pretty bluish-gray ; has a few 

 small drusy cavities with crystals of calc spar ; fossils are Athyris siibtilUa, crinoid stems, 

 Prod, longispinux, Avicul-tpecten carboni/erus, Terebratula bouidens, and Spirifer came- 

 ratus 16 



One and a half miles south-west of Bethel part of No. 31 crops out 

 along the creek, the upper portion au even bedded bluish-gray sub-crys- 

 taliue limestone ; but below it is more irregularly bedded. Productus 

 longispinus abounds, associated with Aviculopecten carboniferus. Four 

 miles N. E. of Litchfield the upper part of No. 31 is a thick bedded brown- 

 ish-gray limestone abounding in Rhynchonella osagensis. 



Economical Geology. 



Goal— On J. Wilson's land, sec. 7, T. 8 N., R. 2 W., coal No. 13, (No. 

 24 of upper Ooal Measure section) has been mined ; that used was from 

 near the out-crop and does not appear very favorably ; the quality and 

 thickness might improve by thorough opening. The same coal has 

 also been taken out on the land of Jno. L. Newsman, in sec. 28, T. 10 

 N., R. 3 W. I was informed that it was 18 inches thick, but I could 

 not thoroughly examine it on account of the overlaying debris. Ou the 

 land of Mr. McUraeken near the south county line (probably in Bond 

 county), coal 13 is 17 inches thick. Occurring as it does below the bed 

 of the creek, it can only be reached at low water, and even then the 

 labor of one man is required most of the time to keep the pit sufficiently 

 dry for two others to work ; but with this trouble it will repay very well to 

 work for neighborhood purposes. The same bed has also been worked at 

 Ross' old mill, on Shoal creek, at the south county line, and may also be 

 reached just below the surface of the water on Shoal creek above Long 

 bridge. At the limestone quarries on the creek near Butler, it may be 

 reached at about 10 to 14 feet beueath the bed of the creek ; also about 

 4 feet beneath the darker colored limestone at the base of Michael 

 Cleary's quarry east of Litchfield. 



Section of the Litchfield shaft, conducted by Andrew Howard : 



Ft. In. 



Clay and hard-pan- 35 



Soft blue sandstone in thin layers 18 



Bine shale Hi 



Black calcaroons shale 3 



—21 



