VOL.9, NO. 5
CERAMICS AND CHEMISTRY
819
processing equipment-such cases could be multiplied almost indefinitely and each time the difficulty has been overcome by replacing the material a t fault by an acid-proof clay product usually a t a fraction of the original c'mt. The answer of the ceramic industry to the corrosion problem of the chemical and allied industries is that there is no such problem. Thus ceramics, the world's oldest handicraft, that has for a hundred centuries contributed so much heauty and comfort t o the life of mankind is now transformed by scientific research and modem manufacturing methods into an important agent in the material progress of the present industrial age. Acknowledgment The author wishes t o express his indebtedness to Dr. Felix Singer for much of the historical and technical matter contained in this article, to Mr. G. Bickley Remmey for some interesting facts relative to the beginnings of the stoneware industry in the United States, and to Mr. P. D. Helser for his friendly criticism of the text.
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