Balanced Screw and Revolving Cotton Press - p15

doi:10.1038/scientificamerican07111874-15

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Government Aid to Scientific Investigation - p16

doi:10.1038/scientificamerican07111874-16

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Four Footed Motion - p16

doi:10.1038/scientificamerican07111874-16a

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The Railways of the United States - p16

doi:10.1038/scientificamerican07111874-16b

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Some of the Uses of Paraffin - pp16 - 17

doi:10.1038/scientificamerican07111874-16c

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Refrigerating Mixtures and Their Physiological Effects - p17

doi:10.1038/scientificamerican07111874-17

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Progress of the Fireless Locomotive - p17

doi:10.1038/scientificamerican07111874-17a

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New Law Concerning Copyrights for Labels - p17

doi:10.1038/scientificamerican07111874-17b

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Scientific and Practical Information - p17

doi:10.1038/scientificamerican07111874-17c

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The Effect of Air Pressure on Animal Life - p18

doi:10.1038/scientificamerican07111874-18

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Improved Steam Engine - p19

doi:10.1038/scientificamerican07111874-19

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The Gravitation Compass - p19

doi:10.1038/scientificamerican07111874-19a

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A Navigable Diving Bell - pp19 - 20

doi:10.1038/scientificamerican07111874-19b

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Astronomical Notes - p20

doi:10.1038/scientificamerican07111874-20a

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Practical Mechanism - p21

Joshua Rose.

doi:10.1038/scientificamerican07111874-21

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Taper Sleeve Pulley and Wheel Fastener - p22

doi:10.1038/scientificamerican07111874-22

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A New Water Pitcher - p22

doi:10.1038/scientificamerican07111874-22a

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A Novel Needle - p22

doi:10.1038/scientificamerican07111874-22b

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Various Methods of Cooling Air - pp23 - 24

doi:10.1038/scientificamerican07111874-23

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Medical Notes - p24

doi:10.1038/scientificamerican07111874-24

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Recent American and Foreign Patents - pp24 - 25

doi:10.1038/scientificamerican07111874-24b

PDF (817 KB)

Answers and Correspondents - pp26 - 27

doi:10.1038/scientificamerican07111874-26a

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Communication Received - p27

doi:10.1038/scientificamerican07111874-27

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Canadian Patents - p28

doi:10.1038/scientificamerican07111874-28

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