Resistance of clay burned at different temperatures to disintegration by slaking and freezing . (16). PLATE 19-20, 800 C. A sound; B broken; C broken; D crumb-led; E sound. 23-24, 850 C. A sound; B broken; D crumb-led; E sound; Cbroken.

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Keywords: ., bookcentury1900, bookdecade1910, booksubjecttheses, bookyear1915