A New and Important Field for Research - p64

doi:10.1038/scientificamerican07291882-64

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The Hektograph - p64

doi:10.1038/scientificamerican07291882-64a

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Aspects of the Planets for August - p65

doi:10.1038/scientificamerican07291882-65

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The Manufacture of Opium - p66

doi:10.1038/scientificamerican07291882-66

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Cutting Drains by Machinery - p66

doi:10.1038/scientificamerican07291882-66a

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Improved Cutter Bar for Reapers and Mowers - p67

doi:10.1038/scientificamerican07291882-67

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Novel Attachment to Fountains and Bottle Stoppers - p67

doi:10.1038/scientificamerican07291882-67a

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Improved Pulverizer - p70

doi:10.1038/scientificamerican07291882-70

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John Scott Russell - p71

doi:10.1038/scientificamerican07291882-71

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Microscopical Examination of Ice - pp71 - 73

Ephraim Cutter

doi:10.1038/scientificamerican07291882-71a

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Mechanical Inventions - p73

doi:10.1038/scientificamerican07291882-73

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Miscellaneous Inventions - p73

doi:10.1038/scientificamerican07291882-73a

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Engineering Inventions - p74

doi:10.1038/scientificamerican07291882-74

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Mechanical Inventions - p74

doi:10.1038/scientificamerican07291882-74a

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Agricultural Inventions - p74

doi:10.1038/scientificamerican07291882-74b

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Miscellaneous Inventions - p74

doi:10.1038/scientificamerican07291882-74c

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