National Geographic : 1920 Nov
KNEADING CLAY BY FOOT-POWER AFTER IT HAS BEEN THOROUGHLY CLEANSED AND SIFTED After the soft clay bricks have been brought from the quarries, they are "worked up" in this manner until the material is ready for the potter's wheel. More than a dozen kinds of clay are found in the neighborhood of Po Yang Lake. THIS MILK-LIKE LIQUIDISTHE PORCELAIN GLAZE READY TOBE BLOWN OR BRUSHED UPON THE POTTERS' PRODUCT The Chinese porcelain makers pursue their occupation today with practically the same implements which they have employed for1,700 years. There are probablyfewer mechanical devices inuseinChing teh-chen than in any otherindustrial city ofitssize intheworld.