Transactions . Fig-5-— Cylinder Ag. Cylinder from Cains Fig. 6.—(Langheim-Pfanhauser) Cylinder iron, remelted in gas furnace. 26, remelted in Arsem furnace in Fig. 7.—Cylinder Ag, Langheim-Pfanhauser, Fig. 8.—Same as Fig. 1, but 250 diameters, remelted in gas furnace. Plate IIa.—Photomicrographs. THE CRITICAL RANGES A2 AND A3 OF PURE IRON. 707 .I i» P fI / V [! i lI /\ V •• .4 * <5) . .«* \ 9. A v s: ~ .. ? »p&j£tju*$ s*»j£»cr ZT 708 THE CRITICAL RANGES A2 AND A-3 OF PURE IRON.

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Keywords: ., bo, bookcentury1800, bookdecade1870, booksubjectmineralindustries