. Transactions. Tl ME IN HOURS Time in hours. TIME IN HOURS TIME IN HOURS i COMMERCIAL CARBONIZING-MATERIALS. 413 Table XXVll.—Material U: 1,600° F. 123 45678910 II §^ 3CS i-i fl ajO Grams. Per Cent. I t Depth of Carbon. Over Per Cent. Cent. to Per Cent. to Per Cent. Total. Inches.

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. Transactions. Tl ME IN HOURS Time in hours. TIME IN HOURS TIME IN HOURS i COMMERCIAL CARBONIZING-MATERIALS. 413 Table XXVll.—Material U: 1,600° F. 123 45678910 II §^ 3CS i-i fl ajO Grams. Per Cent. I t Depth of Carbon. Over Per Cent. Cent. to Per Cent. to Per Cent. Total. Inches. 1,750° F, 10 6! 6. 0468

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Keywords: ., bo, bookcentury1800, bookdecade1870, booksubjectmineralindustries