A WEEKLY JOURNAL OF PRACTICAL INFORMATION, ART, SCIENCE, MECHANICS, CHEMISTRY, AND MANUFACTURES, Vol, XV.noNo. 2 | NEW YORK, JULY 7, 1866. {Mh abyaNcn)” Improved Steam Boiler. with brick-work ; in the thorough circulation of the | is such that, in those which have been for some time The hindrance…
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