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Petition for Extension of a Patent—Fire Proof Safes - p194
doi:10.1038/scientificamerican02281857-194a
Adjustable Drop-Motion for Steam Valves - p196
doi:10.1038/scientificamerican02281857-196
Report of the Commissioner of Patents - p197
doi:10.1038/scientificamerican02281857-197
Magnetic Communication for Individual Purposes - p197
doi:10.1038/scientificamerican02281857-197b
Exhibition of the Metropolitan Mechanics Society, Washington, D. C. - p197
doi:10.1038/scientificamerican02281857-197e
Report of the Commissioner of Patents for 1856 - p198
doi:10.1038/scientificamerican02281857-198a
To Render Textile Fabrics Water-Proof - p200
doi:10.1038/scientificamerican02281857-200a
