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Show ANCIENTS KNEW OF GLAZING Proof That Early Inhabitants of Mexico Mex-ico Used Process in the Manufacture Manu-facture of Pottery. The discovery by Henry C. Mercer ot Daylestown, Pa., tbat the ancient inhabitants ot" Mexico used a glazing process in the manufacture of their pottery has revolutionized the views of ceramic experts at the University of Pennsylvania, and may lead, says American Art News, to the discovery of beds of clay suitable for use today. Mr. Mercer, who is an expert on tiling til-ing and a former ouratdr of the University Uni-versity museum, during a recent study of Mexican potteries at the museum, had his attention called to the variance vari-ance in workmanship in certain collections. col-lections. He promptly classified the potteries as possessing two different kinds of clay, and was surprised to find that a distinct glaze was still apparent. ap-parent. The ancient Egyptians, says Mr. Mercer, did not glaze their works, the Chinese adopting this precaution at a later date to make their vessels impervious im-pervious to w-ater. Civilization had been established by this time, however, how-ever, and the use of the glazing art by prehistoric Mexicans may unfold interesting ceramics. |