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Less often he took out the CO snow, and measured it, and dumped an equivalent quantity of pale-blue liquid oxygen into the liquid air that had been purified by cold. The oxygen dissolved. Then the apparatus reversed itself and supplied fresh air from the now-enriched fluid, while the depleted other tank began to fill up with cold-purified liquid air.
The world, transformed by industry's bold hand, The human heart, by new-born instincts moved, That have in burning fights been fully proved, Your circle of creation now expand. Advancing man bears on his soaring pinions, In gratitude, art with him in his flight, And out of Nature's now-enriched dominions New worlds of beauty issue forth to light.
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