Strong Magnets. Absorption of Oxygen in Coal Mines. A Suspended Aqueduct. 0 AN EASILY MADE CHAIR. 04-s A Strong and Handy Cement. Whooping Cough. IMPROVED FLOWER STAND. MoCALLUM'S FLOWER STAND. A A Naval Experiment with the Electric Light. RECENT INVENTIONS. The American Institute Fair. A CHEAP AND COMFORTABLE CHAIR., scientific american, 1881-10-01

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Strong Magnets. Absorption of Oxygen in Coal Mines. A Suspended Aqueduct. 0 AN EASILY MADE CHAIR. 04-s A Strong and Handy Cement. Whooping Cough. IMPROVED FLOWER STAND. MoCALLUM'S FLOWER STAND. A A Naval Experiment with the Electric Light. RECENT INVENTIONS. The American Institute Fair. A CHEAP AND COMFORTABLE CHAIR., scientific american, 1881-10-01

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