. Transactions. Fig. 5.—Section of hypereutectoid Fig. 6.—Grading zone in normal ZONE IN ABNORMAL STEEL, AS STEEL; NOTE LARGE GRAIN SIZE. EtCHED shown in Fig. 4, using sodium-picr.\te with 5 per cent, picric acid and ETCH. X 200. ALCOHOL. X 100. W. H. McQUAID AND E. W. EHN 347. Fig. 7.— Gradation zone in abnor- Fig. 8.—Same as Fig. 7, but diiterent MAL steel; note small GRAINS AND STEEL. indications op banding TYPICAL OF THIS steel. Etched with 5 per cent. PICRIC ACID AND ALCOHOL. X 100.

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Keywords: ., bo, bookcentury1800, bookdecade1870, booksubjectmineralindustries