. Transactions. -4 5 e 7 8 £TIME IN HOURS. Z 3 ^ S 6 783TIME IN HOURS TIME IN HOURS VOL. XLIV.—24 392 COMMERCIAL CARBONIZING-MATERIALS. Table XUL—Material G. 1,600° F. Increase inWeight. SurfaceCarbon. Depth of Carbon. § Over Per Cent. Cent. to Per Cent. to Per Cent. TotaL 1 Grams. Per Cent. Inches. _ 1 Inches. noticeable increase in carbon. Inches. 2 No noticeable increase in noticeable increase in noticpahle incrpase in carbon. 3 4

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. Transactions. -4 5 e 7 8 £TIME IN HOURS. Z 3 ^ S 6 783TIME IN HOURS TIME IN HOURS VOL. XLIV.—24 392 COMMERCIAL CARBONIZING-MATERIALS. Table XUL—Material G. 1,600° F. Increase inWeight. SurfaceCarbon. Depth of Carbon. § Over Per Cent. Cent. to Per Cent. to Per Cent. TotaL 1 Grams. Per Cent. Inches. _ 1 Inches. noticeable increase in carbon. Inches. 2 No noticeable increase in noticeable increase in noticpahle incrpase in carbon. 3 4 5 1 6 7 8 9 10 1,750° F. 12345678910 ! :

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Keywords: ., bo, bookcentury1800, bookdecade1870, booksubjectmineralindustries