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Scientific American, Vol. 51, No. 4 (July 1884) (1884)

leaf 9

An illustration from Scientific American, Vol. 51, No. 4 (July 1884), 1884, leaf 9
efore the tint changed in who has fallen overboard may rest until rescued by the the direction from red toward violet in the spectrum. If in tiie shortest possible time. By a combination of old de- boats. vices Sullivan has reduced time to the minimum, and ac- we are receding from such a source of… … closely to the successful realization. No one had quite can compare any given line of hydrogen—say the one in HOWELL'S AUTOMATIC WAVE LUBRICATING LIFE BUOY. the red part of the spectrum—with the corresponding line of reached the goal. The evidence shows that in one instance, hydrogen as given by…

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