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of the bulb is as shown and described before, when reference was made to Fig. 19. A zinc sheet Z, with a tubular extension T, is slipped over the metallic socket S. The bulb hangs downward from the terminal t, the zinc sheet
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Fig. 27.—Phosphorescent Tube with Intensifying Reflector.
Z, performing the double office of intensifier and reflector. The reflector is separated from the terminal t by an extension of the insulating plug P.
A similar disposition with a phosphorescent tube is illus-
