r of the bolt, Trevelyan rocker is utilized and made to take the place THE SCIENTIFIC AMEBICAN IODIDE OF MEBCUEY under thermic expansion, keeps the bolt in oscilla- of a vibrating diaphragm. As Melde's experiment BABOMETEB. tion. Another feature will be observed. A soldering iron of octagon section… … THE SCIENTIFIC AMEBICAN of vitriol, the next IODIDE OF MEECUBY liquid practically BABOMETEB. available that ap- The details of the barometer proaches it in weight, It was constructed for and are shown in the cut stands in the Scientific American offices. The tube is in one piece, and is about % in.…
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