to compression until its On Color Vision. pared from a photograph of this second ingot being shown temperature had fallen below that at which bubbles would Yo the Editor of the Scientific American : by Fig. 3. It is known that a certain length of time is necessary to be reformed. We do not know… … and, still more, the violet remaining behind. On undergoing compression. With the Bessemer pro- RICCO’S EXPERIMENTS ON COLOR VISION. moving the mirror in the opposite direction, the cess less difficulty is experienced in this way, the initial temperature being higher; but even where Besse It will…
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