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For Farmers—Proceedings of the Royal Agricultural Society of England - p394
doi:10.1038/scientificamerican08281852-394
Prevention of Explosions in Steam Boilers - p395
doi:10.1038/scientificamerican08281852-395
Extraordinary Discovery—Perpetual Light - p395
doi:10.1038/scientificamerican08281852-395e
An Improvement in Attaching Hubs to Axles - p396
doi:10.1038/scientificamerican08281852-396f
American Association for the Advancement of Science - p398
doi:10.1038/scientificamerican08281852-398c
