the carbon cannot, unless oxygen is present in the furnace in miles, populated by over 263,000 persons. The Monongahela that the sand becomes dry.” excess, obtain what it wants; and this is due to the fact that and the Allegheny rivers meet here, and give the city access We give a sketch, taken… … ton burns powdered coal with as little as 13 Ibs. or 14 lbs. of scenes which all Americans view with pride in the present air per pound of fuel, and has, we believe, obtained satisfac- and hope in the future. tory results when but 12 lbs. of air were admitted. 0 The direct effect of the admission…
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