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The American Association for the Advancement of Science - pp130 - 131
doi:10.1038/scientificamerican09011894-130
An Automatic Discharger of Abnormal Electric Currents - p132
doi:10.1038/scientificamerican09011894-132b
Steam and Electric Cableway for Logging and Canal Boat Towing - pp137 - 139
doi:10.1038/scientificamerican09011894-137
A Recording Thermometer for Closed Spaces - pp139 - 140
doi:10.1038/scientificamerican09011894-139
