Transactions . 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 THE CRITICAL RANGES A2 AND A3 OF PURE IRON. 709 _3_ ., ft i\ •• • ~--_S_. -— !s_ ;• SL, ---T. . «j_ f*~~* • • -•? 9. **..„^ ,„,.. - :............->??- S-5 - * k 5>5 |l SS3j6*Q 1$ 5 3^| ? *>3 g —Is > II

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Transactions . 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 THE CRITICAL RANGES A2 AND A3 OF PURE IRON. 709 _3_ ., ft i\ •• • ~--_S_. -— !s_ ;• SL, ---T. . «j_ f*~~* • • -•? 9. **..„^ ,„,.. - :............->??- S-5 - * k 5>5 |l SS3j6*Q 1$ 5 3^| ? *>3 g —Is > II 710 THE CRITICAL RANGES A2 AND A-3 OF PURE IRON. 1 ••i-v. -, / / *» ; J \\ ^ -_, ? f-> _$. ? ^ ^_ »F»/£ip»? | — 41 MM^- $51 ^1 HI THE CRITICAL RANGES a2 AND A-3 OF PURE IRON. 711 f V 11 ! I I ! I b_ ,-v^lv-- 3pcv£m/»o ratjfoa 15 Hi 712 THE CRITICAL RANGES A2 AND A3 .OF PURE IRON.

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Keywords: ., bo, bookcentury1800, bookdecade1870, booksubjectmineralindustries