advantage that he finds fewer plates to throw aside and the railways on the other hand will have more carefully con structed stronger and in the end cheaper boilersIndua $100 for the best model of a hand coal-cutting machine sub mitted to the Council next June. Mr. T. Parton recently stated that the ordinary loss of coal is 40 per milt owing t the imperfect methods of working it. Where the best ar rangements are in force the loss does not exceed 10 per cent., scientific american, 74-03-14
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