Pipe-clay
A clay of a grayish-white color, greasy to the touch, very plastic, and free from iron and other impurities. Its principal use is for making white pottery and tobacco-pipes. See FELDSPAR; KAOLIN; POTTERY-MOULDING; ETC.
Twelve hundred entries from the golden age of cast metal — how bells are founded, why brass is not bronze, what a cupola melts and a core withstands — by Simpson Bolland, the trade's great teacher.
A clay of a grayish-white color, greasy to the touch, very plastic, and free from iron and other impurities. Its principal use is for making white pottery and tobacco-pipes. See FELDSPAR; KAOLIN; POTTERY-MOULDING; ETC.