Purity of Catskill Water Supply - p366

doi:10.1038/scientificamerican11201909-366

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The New Fourteen-Inch Army and Navy Guns - p366

doi:10.1038/scientificamerican11201909-366a

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The New British and German “Dreadnoughts” - p366

doi:10.1038/scientificamerican11201909-366b

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Acceleration of Long-Distance Express Service - p366

doi:10.1038/scientificamerican11201909-366c

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The Limit of Rapid Transit - p366

doi:10.1038/scientificamerican11201909-366d

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The Other Half of the Cullinan - p366

doi:10.1038/scientificamerican11201909-366e

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Engineering - p367

doi:10.1038/scientificamerican11201909-367

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Electricity - p367

doi:10.1038/scientificamerican11201909-367a

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Science - p367

doi:10.1038/scientificamerican11201909-367b

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Something New in Concrete Block Making - p368

M. H. Hunting

doi:10.1038/scientificamerican11201909-368

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A “Dreadnought” of 1863 - pp368 - 369

doi:10.1038/scientificamerican11201909-368a

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Power Indicator for Internal-Combustion Engines - pp369 - 370

doi:10.1038/scientificamerican11201909-369

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The Solar and Lunar Eclipses of 1909 - pp370 - 371

Frederic R. Honey

doi:10.1038/scientificamerican11201909-370

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Why Watch Springs Break - p371

doi:10.1038/scientificamerican11201909-371a

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Railway Motor Cars - p371

doi:10.1038/scientificamerican11201909-371b

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Another Evil of Deforestation - p371

doi:10.1038/scientificamerican11201909-371c

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How Lemon Oil Is Made - p372

Frank N. Bauskett

doi:10.1038/scientificamerican11201909-372

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Artillery for Airship Attack - p373

doi:10.1038/scientificamerican11201909-373

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Wireless Communication with Balloons - p374

doi:10.1038/scientificamerican11201909-374

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The Wellcome Tropical Research Laboratories - p375

doi:10.1038/scientificamerican11201909-375

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Patent Department - p376

doi:10.1038/scientificamerican11201909-376

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Combined Timer and Distributer for Internal-Combustion Engines - p376

doi:10.1038/scientificamerican11201909-376a

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An Improved Steam Trap - p376

doi:10.1038/scientificamerican11201909-376b

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A New Grain Bin Construction - p376

doi:10.1038/scientificamerican11201909-376c

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Oddities in Invention - p376

doi:10.1038/scientificamerican11201909-376d

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