. Transactions. 3 -«* 5 6 7 8 9Tl ME IN HOURS TIME IN HOURS ?+-t--!--f—!? —r--[. => 5 & 7 e s>TIME IN HOURS e 3 -4 s & 7 e TIME INI HOURS COMMERCIAL CARBONIZING-MATERIALS. Table XL—Material ^. 389 1,600° F. 12345678910 a o ~ S 4) IS S^ cbO Grams. Per Cent. i Depth of Carbon. Over Cent. to to Total. Per Cent. Per Per Cent. Inches. Inches. Inches. Inches.

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. Transactions. 3 -«* 5 6 7 8 9Tl ME IN HOURS TIME IN HOURS ?+-t--!--f—!? —r--[. => 5 & 7 e s>TIME IN HOURS e 3 -4 s & 7 e TIME INI HOURS COMMERCIAL CARBONIZING-MATERIALS. Table XL—Material ^. 389 1,600° F. 12345678910 a o ~ S 4) IS S^ cbO Grams. Per Cent. i Depth of Carbon. Over Cent. to to Total. Per Cent. Per Per Cent. Inches. Inches. Inches. Inches. • 1,750° F. 1 2 3 4 5

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Keywords: ., bo, bookcentury1800, bookdecade1870, booksubjectmineralindustries