The Nicaragua Canal - p63

doi:10.1038/scientificamerican01311891-63

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The New York Water Supply—A Great Dam Decided Upon - p64

doi:10.1038/scientificamerican01311891-64

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Mr. Cramp the Shipbuilder, Replies to his Critics - pp64 - 65

doi:10.1038/scientificamerican01311891-64a

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Position of the Planets in February - p65

doi:10.1038/scientificamerican01311891-65

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The Unicycle Elevated Railway - p66

doi:10.1038/scientificamerican01311891-66

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An Improved Tappet - p67

doi:10.1038/scientificamerican01311891-67

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How Heron Solved It - p67

doi:10.1038/scientificamerican01311891-67a

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A Swing Readily Adjustable for Height - pp67 - 68

doi:10.1038/scientificamerican01311891-67b

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A Device for Reaching High Shelving - p68

doi:10.1038/scientificamerican01311891-68

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The Belt Problem - p69

doi:10.1038/scientificamerican01311891-69a

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The Canet System of Firing Torpedoes - pp70 - 71

doi:10.1038/scientificamerican01311891-70

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Scientific American Building Edition - p74

doi:10.1038/scientificamerican01311891-74a

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To Inventors - p75

doi:10.1038/scientificamerican01311891-75b

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Books on Electricity - p76

doi:10.1038/scientificamerican01311891-76

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Mechanical Drawing - p77

doi:10.1038/scientificamerican01311891-77a

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Experimental Science - p78

Geo. M. Hopkins, By

doi:10.1038/scientificamerican01311891-78

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The Scientific American - p78

doi:10.1038/scientificamerican01311891-78a

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The Scientific American Supplement - p78

doi:10.1038/scientificamerican01311891-78b

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