se from the industrial schools of mosphere, but failed completely when there was a little Philadelphia, Chicago, Worcester, St. Louis, New wind, seems to have stimulated the other votaries of nace. The thick smoke which it produces passes aeronautics. We hear from Berlin that another diri- through… … permanent exhibition. Arrangements have already a more abundant supply may be expected. Ceria, in been made for similar exhibitions in several neighbor- the form of hydrate, constituted 94 and 13-4 per cent Fig. 2-SMALL APPARATUS FOR CONDENSING SMOKE ing cities. It is confidently believed that this…
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