not distinguishable from certainkinds of iron. Hence, ity and workmanship. in metallurgy, the chemical composition of various In former times—not so very long since, either—all sorts of ironis a matter of meresecondary importance, bolts were forged by hand. That is to say, the rods and the real… … of iron, we cannot avoid just the same difference be- suspecting that the differ- tween the strength of the two ences observed are, after all, due to the presence in For further information address White & Butter- kinds as between a solid-headed pin and one formed one case, and absence in the…
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