The Hydromotor - pp223 - 224

doi:10.1038/scientificamerican10111879-223

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The Temperature of Water Supply - p224

doi:10.1038/scientificamerican10111879-224

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The Sydney Exhibition - p224

doi:10.1038/scientificamerican10111879-224a

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Water for Industrial Uses in New York - p224

doi:10.1038/scientificamerican10111879-224b

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Conspiracies to Nullify the Patent Laws - pp224 - 225

doi:10.1038/scientificamerican10111879-224c

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Extraction of Oils by Means of Solvents - p225

doi:10.1038/scientificamerican10111879-225

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The Policy of Patent Laws - p225

doi:10.1038/scientificamerican10111879-225a

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Mechanical Inventions - p226

doi:10.1038/scientificamerican10111879-226

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Rosset's Clock - p226

doi:10.1038/scientificamerican10111879-226a

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Practical Experiments in Magnetism, with Special Reference to the Demagnetization of Watches.—No. 3 - pp227 - 229

Alfred M Mayer

doi:10.1038/scientificamerican10111879-227

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A New Drag Sawing Machine - p230

doi:10.1038/scientificamerican10111879-230

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A New Fire Escape - p230

doi:10.1038/scientificamerican10111879-230a

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Miscellaneous Inventions - pp230 - 231

doi:10.1038/scientificamerican10111879-230b

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New Calculating Attachment for Weighing Scales - p231

doi:10.1038/scientificamerican10111879-231

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The Otocyon - p231

doi:10.1038/scientificamerican10111879-231a

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Recent Agricultural Inventions - p231

doi:10.1038/scientificamerican10111879-231b

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Natural History Notes - pp231 - 233

doi:10.1038/scientificamerican10111879-231c

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French Faience - p233

doi:10.1038/scientificamerican10111879-233

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The Baneful Effects of Absinthe - p234

doi:10.1038/scientificamerican10111879-234

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Communications Received - p236

doi:10.1038/scientificamerican10111879-236

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