GEOLOGY, 19 



manufacturer, and should be always remembered by them, 

 when in search of either ores, or salt water. 



Are found in quantities, sufficient for every useful purpose, 

 forever, in almost every county in our hilly region, from the 

 summit between the waters of the Ohio, and lake Erie, to the 

 Ohio river itself. In Tuscarawas county, the canal passes 

 through the iron ore, where it lies in inexhaustible beds, within 

 sight of the canal, and very near it. This ore melts easily, 

 and yields a soft malleable iron, suitable for castings and bars. 

 In some places, it is combined with sulphur, from which cop- 

 peras was made, formerly, in considerable quantities at Zanes- 

 ville and Steubenville. 



The common red hematite exists in large quantities, in the 

 counties of Tuscarawas, Holmes, Coshocton, Muskingum, 

 Hocking, Athens, Meigs, Lawrence, Scioto, Adams, Ross, High- 

 land, Licking and several other counties in the hilly region. 

 It exists, also, in Kentucky, opposite to Lawrence and Scioto 

 counties, where large quantities of iron are manufactured, by 

 the Messrs. Trunble, and others. To estimate the value of 

 the iron manufactured in this state, now, is impossible from 

 any data in our possession, though we know that it does amount 

 to, from seven to ten milhons of dollars annually. Its value 

 and quantity are rapidly increasing, and will increase, for cen- 

 turies to come, because the quantity of ore is inexhaustible. 



CIAYS. 



In the counties of Lawrence, Perry and Muskingum, a white 

 clay is found, in abundance, suitable for pots and crucibles, 

 used in glass factories. It stands the heat very well, growing 

 whiter when it is exposed to the greatest heat. It will one 

 day, be used extensively, in the manufacture of Liverpool 

 earthen wares. It contains no iron, and is almost infusible be- 

 fore the blow pipe. 



The substances denominated clays, are mixtures of silex 



