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Scientific American, Vol. 38, No. 7 (1878) (1878)

leaf 4

An illustration from Scientific American, Vol. 38, No. 7 (1878), 1878, leaf 4
stals of permanganate of respired air to escape at the proper moment. On account of | potass. This latter is for replacing the oxygen absorbed in 'respiration, and for adding a certain amount of humidity to ground on one side, like the focusing glass of a camera. Now the air, which makes it fresher… … coast, and from Bermuda, England, and various points on but for distances greater than 100 feet respiration becomes!

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