To Keep the Peace - p402

doi:10.1038/scientificamerican05291909-402

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Station Announcers on Trains - p402

doi:10.1038/scientificamerican05291909-402a

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Comparison of Steam and Producer-Gas Marine Plants - p402

doi:10.1038/scientificamerican05291909-402b

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Defense Against Dirigibles - p402

doi:10.1038/scientificamerican05291909-402c

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Engineering - p403

doi:10.1038/scientificamerican05291909-403

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Aeronautics - p403

doi:10.1038/scientificamerican05291909-403a

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Science - p403

doi:10.1038/scientificamerican05291909-403b

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The New Knippels Bridge at Copenhagen - p404

doi:10.1038/scientificamerican05291909-404

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Fluid Compression of Steel Ingots - pp405 - 406

J. F. S. Springer

doi:10.1038/scientificamerican05291909-405

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The New United States Battleship “Mississippi” - p406

doi:10.1038/scientificamerican05291909-406

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Slipping of Wheels on Curves - p407

doi:10.1038/scientificamerican05291909-407a

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Some More Lunar Superstitions - p407

doi:10.1038/scientificamerican05291909-407b

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Signaling to Mars with Mirrors - p407

doi:10.1038/scientificamerican05291909-407c

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The Manufacture of French Postage Stamps - pp407 - 409

Jacques Boyer

doi:10.1038/scientificamerican05291909-407d

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Patent Department - p411

doi:10.1038/scientificamerican05291909-411

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Can-Filling Machine - p411

doi:10.1038/scientificamerican05291909-411a

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Poultry-Picking Machine - p411

doi:10.1038/scientificamerican05291909-411b

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Self-Cleaning Brush - p411

doi:10.1038/scientificamerican05291909-411c

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