Peter Spence, of Manchester, England, proposes not only to do away with the smoke of large cities, but with the chimnies also. His plan is, to carry the smoke into a large central sewer under the street by proper conduits, and then have at some distance from the city, a Tower of Babel-like chimney, into which all the smoke pipes should come. The idea is certainly novel, but scarcely practicable just yet. INDEPENDENCE DAY. — This being the Fourth of July week, some of our subscribers may not receive their papers as early as usual t by one day.