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Index
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The Improvement of the Railroad Approaches of New York - p127
doi:10.1038/scientificamerican03021889-127
An Instrument to test Engine Crank Shafts - p130
doi:10.1038/scientificamerican03021889-130a
Melde's Experiment with the Trevelyan Rocker - p135
T. O'Conor Sloane, PH.D.
doi:10.1038/scientificamerican03021889-135
The Scientific American Iodide of Mercury Barometer - pp135 - 136
doi:10.1038/scientificamerican03021889-135a
Improved apparatus for Heating Cars - pp136 - 137
doi:10.1038/scientificamerican03021889-136a
Simple Experiments in Physics - p137
Geo. M. Hopkins
doi:10.1038/scientificamerican03021889-137