The Electric Subway Conduit in New York - p223

doi:10.1038/scientificamerican10091886-223

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“The Remedies of Nature” - pp224 - 225

doi:10.1038/scientificamerican10091886-224

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Improved Railway Signal - p226

doi:10.1038/scientificamerican10091886-226

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Improved Emery Grinder - p226

doi:10.1038/scientificamerican10091886-226a

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An Improved Churn - p227

doi:10.1038/scientificamerican10091886-227

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Improved Carillon - p227

doi:10.1038/scientificamerican10091886-227a

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Boiler Cleaner - p227

doi:10.1038/scientificamerican10091886-227b

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Experiments in Pneumatics with a Steam Vacuum - p228

T. O'conor Sloane, Ph. D.

doi:10.1038/scientificamerican10091886-228

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Photographic Notes - p229

doi:10.1038/scientificamerican10091886-229a

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A Scientific Top - pp230 - 231

M. Hopkins

doi:10.1038/scientificamerican10091886-230

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The Transmission of Power by Electricity between Creil and Paris - p232

doi:10.1038/scientificamerican10091886-232

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A Ball of Birds - pp233 - 234

doi:10.1038/scientificamerican10091886-233

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Engineering Inventions - p235

doi:10.1038/scientificamerican10091886-235

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Mechanical Invention - p235

doi:10.1038/scientificamerican10091886-235a

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Agricultural Inventions - p235

doi:10.1038/scientificamerican10091886-235b

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Miscellaneous Inventions - p235

doi:10.1038/scientificamerican10091886-235c

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