Diving Bell
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“The large iron vessel does not allow air to escape once it is lowered into a body of water for underwater work. The hose attached to the top allows for new air to enter the bell.” —Quackenbos 1859
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G. P. Quackenbos A.M. A Natural Philosophy: Embracing the Most Recent Discoveries in the Various Branches of Physics, and Exhibiting the Application of Scientific Principles in Every-day Life (New York: D. Appleton and Company, 1859) 168
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