The Davis Island Dam on the Ohio River - p207

doi:10.1038/scientificamerican04031886-207

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The Patent Bills before Congress - p208

doi:10.1038/scientificamerican04031886-208

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Roots' Blowing and Pumping Machinery - pp208 - 209

doi:10.1038/scientificamerican04031886-208a

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Night Sky-March and April - p209

Richard A. Proctor

doi:10.1038/scientificamerican04031886-209

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Ironing Table - p210

doi:10.1038/scientificamerican04031886-210

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Car Coupling - p210

doi:10.1038/scientificamerican04031886-210a

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An Impromptu Hen Coop - p210

doi:10.1038/scientificamerican04031886-210b

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Improved Sad Iron - p210

doi:10.1038/scientificamerican04031886-210c

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Hill Marking Attachment for Corn Planters - pp210 - 211

doi:10.1038/scientificamerican04031886-210d

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A Compact Boat Boiler - pp211 - 212

doi:10.1038/scientificamerican04031886-211

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Photographic Notes - p212

doi:10.1038/scientificamerican04031886-212

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Artistic Architectural Designs - pp215 - 216

doi:10.1038/scientificamerican04031886-215

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Roots' Improvements in Blowers and Pumps - p217

doi:10.1038/scientificamerican04031886-217

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Engineering Inventions - p218

doi:10.1038/scientificamerican04031886-218

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Agricultural Inventions - p218

doi:10.1038/scientificamerican04031886-218a

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Miscellaneous Inventions - p218

doi:10.1038/scientificamerican04031886-218b

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To Inventors - p219

doi:10.1038/scientificamerican04031886-219

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