Telemeter System - pp63 - 64

doi:10.1038/scientificamerican08031889-63

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Working for Knowledge - p64

doi:10.1038/scientificamerican08031889-64

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The New York Water Supply—How the People Suffer from Lack of Pressure - pp64 - 67

doi:10.1038/scientificamerican08031889-64a

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An Improved Baling Press - p67

doi:10.1038/scientificamerican08031889-67

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An Improved Cultivator - p67

doi:10.1038/scientificamerican08031889-67a

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An Improved Seed Planter and Fertilizer Distributer - p67

doi:10.1038/scientificamerican08031889-67b

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An Improved Cultivator - pp67 - 68

doi:10.1038/scientificamerican08031889-67c

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To Paris Exhibition - pp68 - 70

doi:10.1038/scientificamerican08031889-68

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The Lightning Flash - p70

doi:10.1038/scientificamerican08031889-70

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How to Perforate Glass - pp70 - 71

doi:10.1038/scientificamerican08031889-70a

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The Retsof Salt Mines at Greigsville, N. Y. - pp71 - 72

S. L. Sheldon

doi:10.1038/scientificamerican08031889-71

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Simple Scientific Experiments - p72

doi:10.1038/scientificamerican08031889-72

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An Improved Lifting Jack - p72

doi:10.1038/scientificamerican08031889-72a

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An Improved Wall Paper Protector - p72

doi:10.1038/scientificamerican08031889-72b

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An Improved Fence - pp72 - 73

doi:10.1038/scientificamerican08031889-72c

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To Inventors - p75

doi:10.1038/scientificamerican08031889-75

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