the positive and are placed in the two parts of the three-wirecircuit, the greased valves and cocks, which is accomplished by negative conductors; and I, I’, I?, I’, the are lamps. central wire remains neutral, and no current passes in means of a mercury pump working without a stopcock. In this… … Fig. 3.—Incandescent Lamps in Multiple Arc. Fig. 5.—Two Multiple Arc Circuits In Fig. 2 is given the water analogue, in which E is the water in the system, the upper outside pipe rep- Thus the mercury is well fitted for use in standard the engine G the rotary pump, py and 7 the positive resenting…
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