COSHOCTON COUNTY. 



589 



valleys of the streams, doubtless washed from the hills in the vicinity. 

 The excellence and abundance of this ore render it highly probable that 

 the important deposits of Jackson township, Muskingum county, extend 

 northward into Coshocton. Below are given the analyses of two speci- 

 mens from the valley of Brushy Pork, in Pike township. No. 1 con- 

 sists of a nodule of carbonate, changing exteriorly to limonite ; No. 2, 

 £L similar nodule, being converted by surface oxidation into anhydrous 

 sesquioxide. A similar difference has been frequently noticed among 

 the Coal Measure iron-ores, but no explanation has, as yet, been given : 



Specific gravity. 



Water 



Silicioiis matter 



Iron sesquioxide 



Iron carbonate 



Mangauese 



Alumina 



Lime carbonate 



Lime phosphate 



Magnesia carbonate . 

 Sulphur 



Metallic iron 



Phosphoric acid 



Washington. — The only coal mine of importance seen in this township, 

 is Parks's, in the north-east corner. The bed is No. 6, three and a half 

 to four feet thick, the coal of superior quality, very brilliant, of waxy 

 lustre, giving a brownish-red powder, and purplish ash. It is a good 

 coking coal, melting easily. The pyritous seams it contains, are small 

 .and easily sorted out. The coal finds a ready sale over a considerable re- 

 gion around. The bed lies high up near the top of the hill, but proba- 

 bly may be found in many other places in the eastern part of the town- 

 ship. 



The following is a section of the strata associated with Parks's coal : 



1. Slope covered 



2. Coal No. 6 (Parks's) 3 to 



3. Fire-clay. 



4. Sandstone 



5. Gray limestone 



6. Coal No. 4 



7. Gray shale 



8. Blue shale 



9. Blue limestone. 



10. Coal outcrop, No. 3. 



FT. 

 100 



80 

 4 

 1 



30 



20 



