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Scientific American, Vol. 5, No. 3 (1861) (1861)

leaf 4

An illustration from Scientific American, Vol. 5, No. 3 (1861), 1861, leaf 4
earn that in France there the objects of the inventor, and it embraces some inventor proposes to employ are composed of hermet- features most useful to every worker in iron. is now being made the liquer de cassis in large quan- ically closed chambers or crucibles, the sides of which The processes… … gas retort in a proportion Springvale estate of M. Vas- CASE-HARDENING METAL ARTICLES. of from 8 to 20 per cent sar, Esq., which was as good the weight of the iron to be converted, and according as any imported port wine.—Ep.] on the exterior with a coating of fire-clay, to prevent to the quality…

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