A New Type of Folding Bridge - p159

doi:10.1038/scientificamerican09121891-159

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Testing of Our Great Guns - p160

doi:10.1038/scientificamerican09121891-160

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An Official Geological Organization - p160

doi:10.1038/scientificamerican09121891-160a

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The American Chemical Society - p160

doi:10.1038/scientificamerican09121891-160b

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Condition of Workingmen in Michigan - p161

doi:10.1038/scientificamerican09121891-161

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An Improvement in Flush Hinges - p162

doi:10.1038/scientificamerican09121891-162

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An Improved Car Coupling - p162

doi:10.1038/scientificamerican09121891-162a

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An Improved Receiving Telephone - p162

doi:10.1038/scientificamerican09121891-162b

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A Device for Thawing Ice from Pipes - p162

doi:10.1038/scientificamerican09121891-162c

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A Device for Cleaning Wood Saws - p162

doi:10.1038/scientificamerican09121891-162d

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A Powerful Steam Crane - pp163 - 165

doi:10.1038/scientificamerican09121891-163

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Jupiter - pp165 - 166

doi:10.1038/scientificamerican09121891-165a

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The Kenwood Physical Observatory - pp166 - 168

George E. Hale

doi:10.1038/scientificamerican09121891-166

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New Toboggan Slide for Bathers - p169

doi:10.1038/scientificamerican09121891-169

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To Inventors - p171

doi:10.1038/scientificamerican09121891-171

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