ifferent from anything before made is shown in Fig. 4. This lamp is in two parts, con- nected by vertical tubes. The upper portion has a device for feeding the carbons, and the lower portion contains a device for separating them. The focus or source of light is always at the same place, as the two… … work to be done so light, but very little change in the elec- night work, thus including lighthouse service, fortifications, maritime service, shores, armies in action, and for manufac- tro-motive force of the current is required to stop or start the completely together they would at once draw…
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