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Scientific American, Vol. 23, No. 25 (1870) (1870)

leaf 4

An illustration from Scientific American, Vol. 23, No. 25 (1870), 1870, leaf 4
ers, are cylin- to learn the temperature of the deeper portions of the Atlan- drical, and upon these cylindrical portions are loosely placed tic, and it enables ironmasters and colliery proprietors to see the lower ends of the cheek pieces, D, where they are re- The steatite prevents the one piece… … tors, such as are used for lighting stores, church- to give the same indications. The ends of es, theaters, and public buildings generally. HUNT'S BRIDLE BIT. the fine wire which measures the temperature are connected with two thick platinum wires, each about the mold sticking to the other. The…

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