Oil Refining. Estimation of Tannin. Tests for Light. Action of Poisons on the Petals of Flowers. A Gasoline Engine. Silico Copper Electric Wire., scientific american, 1883-01-13

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Oil Refining. Estimation of Tannin. Tests for Light. Action of Poisons on the Petals of Flowers. A Gasoline Engine. Silico Copper Electric Wire., scientific american, 1883-01-13

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