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Mastic, [169]. Measure, [139], [140], [143], [151]. Measure, liquid, [182]. Measure, long, [181]. Measurement, [145]. Measure, paper, [182]. Measure, solid, [82]. Measure, square, [181]. Membrane, [90]. Mercuric chloride, [166]. Mercury, [94], [114], [183]. Meridian, [145]. Metric, [144], [145], [146]. Metrical, [145]. Micron, [146]. Microscope, [91]. Millimeter, [146]. Milling machine, [26]. Minor, [164]. Minor axis, [105], [106]. Miter, [146]. Miter gear, [123], [124], [125], [126]. Molecular, [82], [117]. Molecular forces, [82]. Molecules, [83], [84], [146]. Momentum, [83], [85]. Motion, [84], [156]. Motor, [136], [155]. N Neat's Foot oil, [168]. Neroli, [168]. Nickel, [164]. Nitrate of copper, [174]. Nitrate of potash, [167]. Nitrate of silver, [174]. Nitric acid, [162], [168], [169], [171], [173]. Nitro-glycerine, [167], [185]. O Oath, [193]. Octave, [159]. Odophone, [159]. Odor, [159]. Oil, [83], [87], [167], [171]. Oil eradicator, [166]. Oleonaptha, [171]. Oscillations, [90], [157]. Ounce, [180]. Outlines, [99]. Oxalic acid, [172]. Oxidation, [117]. Oxide, [117], [163]. Oxidizing, [116]. Oxygen, [83], [119]. P Palm oil, [171]. Paper, [168], [171]. Paraffine, [168], [171]. Parallel, [91], [100], [121]. Paris blue, [172]. Paste, [163], [173]. Patents, [188], [189], [190], [192], [194]. Pawl, [73], [76]. Pendulum, [73]. Parting tools, [28]. Perimeter, [73].

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