x CONTENTS. 



PAGE 



Chapter XIX. Clays and Clay Industries by Counties, 367-508 



Atlantic county, 369 



Bergen county, 373 



Burlington county, 376 



Camden county, 391 



Cape May county, 406 



Cumberland county, 408 



Essex county, 418 



Gloucester county, 419 



Hudson county, 424 



Hunterdon county, 425 



Mercer county, 428 



Middlesex county, 434 



Importance, 434 



Clay-bearing formations, 435 



Method of classification, 438 



Highly refractory clays, 439 



Fire clays, 439 



Ball clay, 442 



Refractory clays, 444 



Fire clays, 444 



Woodbridge, 444 



Florida Grove, 445 



Sand Hills and Bonhamtown, 446 



Burt Creek, 450 



Ball clay, 452 



Stoneware clay, 453 



Semirefractory clay, 455 



Fire clay, 455 



Fire-mortar clay, 458 



Stoneware clay, 459 



Pipe clay, 459 



Miscellaneous, 460 



Nonrefractory clays, 463 



Woodbridge, 464 



North side of the Raritan river, 464 



Sayreville, 467 



Feldspar, 468 



Fire sands, 469 



Clay-working industry, 470 



Monmouth county, 472 



Morris county, 479 



Ocean county, 481 



Passaic county, 493 



Salem county, 494 



Somerset county, 503 



Sussex county, 505 



Union county, 506 



Warren county, 507 



