614 NEW YOKE STATE MUSEUM 



the important lines of the clay-working industry of the west, and 

 those well made bear an excellent reputation; indeed the Denver 

 fire clay crucibles are considered by many to be fully equal to the 

 English. 



Connecticut 



Sedimentary clays of Quaternary age are found in many of the 

 valleys in great abundance ; they resemble in character those of the 

 Hudson valley, and northern JSTew Jersey. They form the basis 

 of an important industry, specially in the Connecticut valley. 



The clay products manufactured in Connecticut are with the 

 exception of building brick made chiefly from clays obtained from 

 other states. 



Delaware 



Kaolin of excellent quality is extensively mined at Hockessin, 

 I^^ewcastle co.; fire clays of Cretaceous age have also been worked 

 in the state. 



The Columbian formation affords an abundant supply of brick 

 clays. ; ■ 



Florida 

 The clay resources of Florida may be grouped under three heads, 

 i. e. kaolins, common brick clays, and fullers' earth. The kaolins 

 are not such in the true sense but are really sedimentary clays, but 

 they have a high degree of purity. Two important deposits of this 

 material are at presen^t known to exist in the state. The first of 

 these at Edgar, Ela., where the bed of ball clay mined is more 

 than 30 feet thick; the other deposit occurs near Lake City, and 

 extends along the Palatlakaha river for a distance of about 4 

 miles. This deposit has been but little mined. This plastic ball 

 clay consists of about 75^ of quartz pebbles, and 25^ of clay sub- 

 stance. The quartz is easily washed out, leaving a very pure 

 product, which is shipped north and used by many of the manu- 

 facturers of white earthenware. 



