The Adulteration of Soft Soap - p31

doi:10.1038/scientificamerican01181879-31

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American Industries—No. 2 - p31

Hamilton S. Wicks

doi:10.1038/scientificamerican01181879-31a

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Over-Density of Population in Cities - p32

doi:10.1038/scientificamerican01181879-32

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Patents in New South Wales - p32

doi:10.1038/scientificamerican01181879-32a

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Sun Spots and Commercial Crises - pp32 - 33

doi:10.1038/scientificamerican01181879-32b

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Progress of the Swedish Arctic Expedition - p33

doi:10.1038/scientificamerican01181879-33

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The Trademarks Quandary - p33

doi:10.1038/scientificamerican01181879-33a

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How to Utilize Old Fruit Cans - p33

doi:10.1038/scientificamerican01181879-33b

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Senate Bill 300.—Section 2 - p33

doi:10.1038/scientificamerican01181879-33c

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Boiler Feeders for Locomotives, Etc - pp33 - 34

doi:10.1038/scientificamerican01181879-33d

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Straub's Scientific Grain Mill - p34

doi:10.1038/scientificamerican01181879-34

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The Columbia Bicycle - p35

doi:10.1038/scientificamerican01181879-35

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Easily Made Physical Apparatus - pp35 - 36

M. Hopkins

doi:10.1038/scientificamerican01181879-35a

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The Luray Cavern - pp36 - 37

H. C. Hovey

doi:10.1038/scientificamerican01181879-36

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Duplex Steam Pumping Engines - p37

doi:10.1038/scientificamerican01181879-37

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The Clipper Injector - p37

doi:10.1038/scientificamerican01181879-37a

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The Chætodon - pp39 - 40

doi:10.1038/scientificamerican01181879-39

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Early English Style of Piano at the Paris Exhibition - pp40 - 41

doi:10.1038/scientificamerican01181879-40

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Spreading Diphtheria by Kisses - p41

doi:10.1038/scientificamerican01181879-41

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A New Method of Setting Boiler Tubes - p41

doi:10.1038/scientificamerican01181879-41a

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The Gruey Gyroscope and the Gyroscopic Pendulum - pp41 - 42

doi:10.1038/scientificamerican01181879-41b

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To Inventors - p43

doi:10.1038/scientificamerican01181879-43

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