in Fig. 8. The contrast, showing as it does the superiority circular iron building, known as the Colosseum, one hun of the new invention in point of lightness and grace of ap- Production of Sulphuric Acid. dred feet or more in diameter, and nearly the same in higut, pearance, is striking. Tho… … he injects into the chambers as a substitute for steam. This effects (1) asaving of fuel equal to the amount which is re The sockets consist of long tubes made of a tough quality quired to convert this pulverized water into steam, and (2) of sheet iron which extend up on the side of the top, a lit-…
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