Trial of Steak Fire Engines at the Centennial Exhibition - p239

doi:10.1038/scientificamerican10141876-239

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What is Materialism? - p240

doi:10.1038/scientificamerican10141876-240

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Infusorial Earth and Its Uses - p240

doi:10.1038/scientificamerican10141876-240a

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The Hell Gate Blast - pp240 - 241

doi:10.1038/scientificamerican10141876-240b

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The Centennial Awards - p241

doi:10.1038/scientificamerican10141876-241

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A Cigar Scientifically Dissected - p241

doi:10.1038/scientificamerican10141876-241a

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Improved Building Blocks - p242

doi:10.1038/scientificamerican10141876-242

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A Pocket Lung Tester - p242

doi:10.1038/scientificamerican10141876-242a

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A Life-Preserving Cap and Cape - p242

doi:10.1038/scientificamerican10141876-242b

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Apparatus Used in Industrial Processes - pp243 - 244

doi:10.1038/scientificamerican10141876-243

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Practical Mechanism - pp244 - 245

Joshua Rose

doi:10.1038/scientificamerican10141876-244a

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Improved Crosshead for Locomotives - p246

doi:10.1038/scientificamerican10141876-246

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Improved Air Pump - p246

doi:10.1038/scientificamerican10141876-246a

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Improved Bucket Ear - p246

doi:10.1038/scientificamerican10141876-246b

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The Sea Gull - p247

doi:10.1038/scientificamerican10141876-247

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Centennial Notes - p248

doi:10.1038/scientificamerican10141876-248

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Rambling Notes - pp248 - 249

doi:10.1038/scientificamerican10141876-248a

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Glycerin - p249

doi:10.1038/scientificamerican10141876-249

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Recent American and foreign Patents - p250

doi:10.1038/scientificamerican10141876-250a

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New Woodworking and House and Carriage Building Inventions - p250

doi:10.1038/scientificamerican10141876-250b

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New Household Inventions - p250

doi:10.1038/scientificamerican10141876-250c

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New Miscellaneous Inventions - p250

doi:10.1038/scientificamerican10141876-250d

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New Agricultural Inventions - p250

doi:10.1038/scientificamerican10141876-250e

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Communications Received - p251

doi:10.1038/scientificamerican10141876-251b

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Value of Patents - p252

doi:10.1038/scientificamerican10141876-252

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The Validity of Patents - p252

doi:10.1038/scientificamerican10141876-252a

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