and is not affected by sulphuricacid at sixty-six degrees. PNEUMATIC GAS. To Prevent Pumps from Freezing.—A cheap and effective way of prevent-ing pumps from freezing in winter is, totake flax tow or rye straw, and twistinto ropes, two or three inches in diame-ter, and wrapping around the… … This is one of those most desirableimprovements, upon former means andmethods of making artificial light, whichArchitects feel a professional interest in.There is not a gentlemans countryresidence of any pretensions that doesnot stand in need of an illuminating gas.The difficulties, with all such…
Architecture
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