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Knight's Mechanical Encyclopedia (ed. Knight) 2 0 Browse Search
William W. Bennett, A narrative of the great revival which prevailed in the Southern armies during the late Civil War 2 0 Browse Search
Southern Historical Society Papers, Volume 33. (ed. Reverend J. William Jones) 2 0 Browse Search
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Knight's Mechanical Encyclopedia (ed. Knight), E. (search)
xide of nitrogen, which has an energetic tendency to regain the oxygen of which it has been deprived, and resume its condition as nitric acid. Scheele's eudiometer was a tube of known capacity, in which a body of air was exposed to a mixture of sulphur and iron filings made into a paste with water. This abstracted the oxygen of the air, but an evolution of hydrogen somewhat marred the accuracy of the result. De Marte used as an oxygen absorbent a solution of sulphuret of potassium. Guyton used the same material, and added heat to expedite the result. See Nicholson's journal, 4to, Vol. I. Seguin used a glass tube filled with and inverted in mercury. A piece of phosphorus, being introduced, floated to the top of the mercury, and was melted by the approach of a hot iron. Air is then introduced in instalments, and, igniting the phosphorus, parts with its oxygen thereto. A measured quantity having been thus introduced, the remainder in the tube is transferred to a graduate