The New Bridge Over the East River at Blackwell's Island, New York - p113

doi:10.1038/scientificamerican02231895-113

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The Commercial Synthesis of Carbon and Hydrogen - pp114 - 115

doi:10.1038/scientificamerican02231895-114

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An Automatic Feed Lubricator - p116

doi:10.1038/scientificamerican02231895-116

PDF (278 KB)

An Automatic Instantaneous Water Heater - p116

doi:10.1038/scientificamerican02231895-116a

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A Revolving Brush Car Fender - p116

doi:10.1038/scientificamerican02231895-116b

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An Ancient Roman City in Algeria - p117

doi:10.1038/scientificamerican02231895-117

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An Improved Flue Expander - pp117 - 119

doi:10.1038/scientificamerican02231895-117a

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The Advertising Tricycle - p120

doi:10.1038/scientificamerican02231895-120

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A Mechanical Color Test - pp121 - 122

Marcus Benjamin, Ph.D.

doi:10.1038/scientificamerican02231895-121

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The Boring Woodpecker - pp122 - 123

doi:10.1038/scientificamerican02231895-122

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The Mysterious Clepsydra - p123

doi:10.1038/scientificamerican02231895-123

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To Inventors - p125

doi:10.1038/scientificamerican02231895-125b

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