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Show Makinu I't'8-irox As an in'iica- tinn ot the intensify of the heat, re-qirrnl re-qirrnl in making pig-iron, we live the composition of the bottom of the furnace now coti-tnir-ting in H.ipdad a suburb of Torre lljuie. Indiana. Tie luwi-t laer js tw Ive ioei es of sand; m-xt tight inches ol Brazil fire brick ; ; then nine inches of snnd. and b-tly tweiiiy-one i in lies of Shenango fin- brick. 1 nii'-n-ir lle as this would seem, it will require renewal after :-ing :-ing in u-e for two years, as the melted iron wiil find a wav into or thiough it A. I . ''. |