Transformation of Physical Forces - p31

doi:10.1038/scientificamerican07171886-31

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Estrade's High Speed Locomotive - p31

doi:10.1038/scientificamerican07171886-31a

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Recently Proposed Patent Legislation - p32

doi:10.1038/scientificamerican07171886-32

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Progress of Silk Culture in this Country - p32

doi:10.1038/scientificamerican07171886-32a

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Prof Pickering's Early Experiments in Telegraphing Sound - p32

doi:10.1038/scientificamerican07171886-32b

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The Nation's Great Problem, How to Cool a Cellar, and more - pp32 - 34

doi:10.1038/scientificamerican07171886-32c

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Improved Hinge - p34

doi:10.1038/scientificamerican07171886-34

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Car Coupling - p34

doi:10.1038/scientificamerican07171886-34a

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Door Securer - p34

doi:10.1038/scientificamerican07171886-34b

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Car Coupling - p34

doi:10.1038/scientificamerican07171886-34c

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Shaving Mirror - p34

doi:10.1038/scientificamerican07171886-34d

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Pneumatic Pressure Relief Governor - p35

doi:10.1038/scientificamerican07171886-35

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Water level Indicator - pp35 - 36

doi:10.1038/scientificamerican07171886-35a

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Collision Balls and Harmonic Impact - p38

T. O'Conor Sloane

doi:10.1038/scientificamerican07171886-38

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Polarized Light.-Norremberg Doubler and the Study of Thin Films - pp38 - 39

Geo. M. Hopkins

doi:10.1038/scientificamerican07171886-38a

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Winding Engine for Australia - p39

doi:10.1038/scientificamerican07171886-39

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Thermometer with Electric Alarm - pp39 - 40

doi:10.1038/scientificamerican07171886-39a

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Drain Tile Protector - p40

doi:10.1038/scientificamerican07171886-40

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Railway Cross Ties - p40

doi:10.1038/scientificamerican07171886-40a

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Child's Carriage - pp40 - 41

doi:10.1038/scientificamerican07171886-40b

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Rare Specimens of Marmosets - p41

doi:10.1038/scientificamerican07171886-41

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Engineering Inventions - p42

doi:10.1038/scientificamerican07171886-42

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Agricultural Inventions - p42

doi:10.1038/scientificamerican07171886-42a

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Miscellaneous Inventions - p42

doi:10.1038/scientificamerican07171886-42b

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