e that Edison’s idea a solution is obtained the color of which varies in a curious ing toward the head of the locomotive, and capable of afford- is the subdivision of the light, to make it practicable for manner with the temperature of the surrounding air. Ex- ing a more or less intense blast… … passage through the flue,K, between the highly heated arches, gold. In case iron be the color agent, it may be removed by I J, becomes ignited, and is consumed before it can be suffi- dissolving a few crystals of oxalic acid in the cavity; after ciently cooled to extinguish the flame. We are…
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