in constructing this lamp. down until the two carbons meet. This establishes the cir- Above the focus is a silvered reflector of suitable shape to tablishes the voltaic arc, when the light comes out in all cuit and excites the axial magnet in the bottom of the case, throw the beams that would be… … or downward direction, and from this reflector two rows of prisms are suspended. One half of the prisms are ar- ranged with their flat .lide to the light, and the other half gi-eater, its power to excite the electro-magnet corresponding- have their angular side toward the light. Below the focus is…
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