id author title date pages extension mime words sentences flesch summary cache txt 36457 Zambra, Joseph A Treatise on Meteorological Instruments Explanatory of Their Scientific Principles, Method of Construction, and Practical Utility .txt text/plain 70657 4582 70 barometers, thermometers, anemometers, and in every class of instruments. mercury in the barometer at the sea-level generally stood above 30 inches; When the mercury in a barometer tube rises or falls, the level of the the instrument, in order to correct the observed height of the barometer. cistern, filled with mercury, the brass tube, with its divided scale and up the frame; on one side of the tube is placed a scale of inches; a small instrument has a large syphon barometer tube, in which the mercurial surface of the mercury in a syphon barometer is read, as in the instrument the instrument, from which the barometer scale of inches is divided. mercurial barometer were corrected for index-error and temperature. into extensive use thermometer and barometer scale-plates made of tube is arrested, _and indicates the exact temperature_ of the bulb or air The _dry_ bulb thermometer indicates the temperature of the air itself; ./cache/36457.txt ./txt/36457.txt