ot by umn within the barometer tube. In this latitude, and machine. the actual weight of the atmospheric column, but by at the level of the sea, the weight of the atmosphere This great invention was made by William Wood- changes in that weight, this instrument is designed sustains a column of… … A BAROMETER ON A NEW PRINCIPLE. —KEast and West—are alike subjects of the proper It is roughly estimated that the atmosphere ex- Mercury being the heaviest liquid known, barome- care of the Government and the people ; and no tends from the surface of the earth upward about 45 ters in which it is…
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