Steam Rams. The Principle of the Barometer. The New Metals--Rubidium and .Ca3sium. Defects of Bridges--Bad Workmanship. Kind Words from our Cotemporaries. The Pleasures of Business., scientific american, 1861-11-23

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Steam Rams. The Principle of the Barometer. The New Metals--Rubidium and .Ca3sium. Defects of Bridges--Bad Workmanship. Kind Words from our Cotemporaries. The Pleasures of Business., scientific american, 1861-11-23

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