4^)2 



UNITED STATES. 



In that part of the South Mountain, where the 

 Cotoctin Mountain separates from it, in Washing- 

 ton county, Maryland, in Conegocheague settlement, 

 an argillaceous earth has been found, which bears all 

 the characters oi 'Xh^Ar^illa Porcelana of Linnaeus* 

 It lies in immense bodies along the strata of iron ore, 

 and is called mine clay by the miners. 



Before the late revolutionary war, a china manu-^ 

 factory was established at Philadelphia, and some 

 excellent specimens made at it, are still to be found* 

 The clay was brought from White Clay creek, De- 

 laware, as we have been informed* 



A very fine clay is also found in a rivulet, in How-* 

 ard's park, near Baltimore. Fine pipe clay abounds 

 on the banks of the Delaware, below Borden town. 

 New Jersey. This clay resists the action of fire, 

 and is extensively employed for fire bricks, and 

 glass-house pots. 



In New Jersey, ochres of various colours are found 

 in great plenty in different parts, as in Salem county ; 

 near Woodbury in Gloucester county: a manufacture 

 of Spanish brown is carried on from the production 

 of one of the veins. Green clay is found near Long 

 Coming in New Jersey... .Near Allentown, many of 

 the houses are painted with a red clay found in the 

 vicinity. 



Red and yellow ochres, of excellent quality, are 

 found in the ore bed, near Hill and Haynes's iron 

 works, in York district. South Carolina, Some of 

 which has been successfully used in painting houses 

 inYorkville,* 



* Drayton's View of South CaroUnai 



