. Transactions. 3 ^ S « -7 8T 1 ME IN HOURS. 3 -^ s e 7 S JTl ME IN HOURS TIME IN HOURS 410 COMMERCIAL CARBONIZING-MATERIALS. Table ^KY.—Material ,S. 1,600° F. Increase inWeight. SurfaceCarbon. Depth of Carbon. Hour Ov^ ?«Cent. to Per Cent. to Per Cent. Total. 1 Grams. Per Inches. Inches. Inches. 2 3 4 5 6 8 0

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. Transactions. 3 ^ S « -7 8T 1 ME IN HOURS. 3 -^ s e 7 S JTl ME IN HOURS TIME IN HOURS 410 COMMERCIAL CARBONIZING-MATERIALS. Table ^KY.—Material ,S. 1,600° F. Increase inWeight. SurfaceCarbon. Depth of Carbon. Hour Ov^ ?«Cent. to Per Cent. to Per Cent. Total. 1 Grams. Per Inches. Inches. Inches. 2 3 4 5 6 8 9 10 1,750° F. 1 2 i 3 1 4 ! 56 7 8 9 10 : 1,900° F. 1

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Keywords: ., bo, bookcentury1800, bookdecade1870, booksubjectmineralindustries