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Updated: May 18, 2025
This is a gaseous, vapor-bearing, elastic fluid, surrounding the earth. Its volume is estimated at 1/29th, and its weight at about 43/1000ths, that of the globe. It is composed of 21 parts in weight of Oxygen and 77 of Nitrogen, with a little Carbonic Acid, Aqueous Vapor, and a trace of Carburetted Hydrogen.
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